The question whether spinal manipulative therapy (SMT) is effective for acute low back pain is still discussed controversially. Chiropractors (they use SMT more regularly than other professionals) try everything to make us believe it does work, while the evidence is far less certain. Therefore, it is worth considering the best and most up-to-date data.
The aim of this paper was to systematically review studies of the effectiveness and harms of SMT for acute (≤6 weeks) low back pain. The research question was straight forward: Is the use of SMT in the management of acute (≤6 weeks) low back pain associated with improvements in pain or function?
A through literature search was conducted to locate all relevant papers. Study quality was assessed using the Cochrane Back and Neck (CBN) Risk of Bias tool. The evidence was assessed using the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) criteria. The main outcome measures were pain (measured by either the 100-mm visual analog scale, 11-point numeric rating scale, or other numeric pain scale), function (measured by the 24-point Roland Morris Disability Questionnaire or Oswestry Disability Index [range, 0-100]), or any harms measured within 6 weeks.
Of 26 eligible RCTs identified, 15 RCTs (1711 patients) provided moderate-quality evidence that SMT has a statistically significant association with improvements in pain (pooled mean improvement in the 100-mm visual analog pain scale, −9.95 [95% CI, −15.6 to −4.3]). Twelve RCTs (1381 patients) produced moderate-quality evidence that SMT has a statistically significant association with improvements in function (pooled mean effect size, −0.39 [95% CI, −0.71 to −0.07]). Heterogeneity was not explained by type of clinician performing SMT, type of manipulation, study quality, or whether SMT was given alone or as part of a package of therapies. No RCT reported any serious adverse event. Minor transient adverse events such as increased pain, muscle stiffness, and headache were reported 50% to 67% of the time in large case series of patients treated with SMT.
The authors concluded that among patients with acute low back pain, spinal manipulative therapy was associated with modest improvements in pain and function at up to 6 weeks, with transient minor musculoskeletal harms. However, heterogeneity in study results was large.
This meta-analysis has been celebrated by chiropractors around the world as a triumph for their hallmark therapy, SMT. But there have also been more cautionary voices – not least from the lead author of the paper. Patients undergoing spinal manipulation experienced a decline of 1 point in their pain rating, says Dr. Paul Shekelle, an internist with the West Los Angeles Veterans Affairs Medical Center and the Rand Corporation who headed the study. That’s about the same amount of pain relief as from NSAIDs, over-the-counter nonsteroidal anti-inflammatory medication, such as ibuprofen. The study also found spinal manipulation modestly improved function. On average, patients reported greater ease and comfort engaging in two day-to-day activities — such as finding they could walk more quickly, were having less difficulty turning over in bed or were sleeping more soundly.
It’s not clear exactly how spinal manipulation relieves back pain. But it may reposition the small joints in the spine in a way that causes less pain, according to Dr. Richard Deyo, an internist and professor of evidence-based medicine at the Oregon Health and Science University. Deyo wrote an editorial published along with the study. Another possibility, Deyo says, is that spinal manipulation may restore some material in the disk between the vertebrae, or it may simply relax muscles, which could be important. There may also be mind-body interaction that comes from the “laying of hands” or a trusting relationship between patients and their health care provider, he says.
Deyo notes that there are many possible treatments for lower back pain, including oral medicine, injected medicine, corsets, traction, surgery, acupuncture and massage therapy. But of about 200 treatment options, “no single treatment is clearly superior,” he says.
In another comment by Paul Ingraham the critical tone was much clearer: “Claiming it as a victory is one of the best examples I’ve ever seen of making lemonade out of science lemons! But I can understand the mistake, because the review itself does seem positive at first glance: the benefits of SMT are disingenuously summarized as “statistically significant” in the abstract, with no mention of clinical significance (effect size; see Statistical Significance Abuse). So the abstract sounds like good news to anyone but the most wary readers, while deep in the main text the same results are eventually conceded to be “clinically modest.” But even even that seems excessively generous: personally, I need at least a 2-point improvement in pain on a scale of 10 to consider it a “modest” improvement! This is not a clearly positive review: it shows weak evidence of minor efficacy, based on “significant unexplained heterogeneity” in the results. That is, the results were all over the place — but without any impressive benefits reported by any study — and the mixture can’t be explained by any obvious, measurable factor. This probably means there’s just a lot of noise in the data, too many things that are at least as influential as the treatment itself. Or — more optimistically — it could mean that SMT is “just” disappointingly mediocre on average, but might have more potent benefits in a minority of cases (that no one seems to be able to reliably identify). Far from being good news, this review continues a strong trend (eg Rubinstein 2012) of damning SMT with faint praise, and also adds evidence of backfiring to mix. Although fortunately “no RCT reported any serious adverse event,” it seems that minor harms were legion: “increased pain, muscle stiffness, and headache were reported 50% to 67% of the time in large case series of patients treated with SMT.” That’s a lot of undesirable outcomes. So the average patient has a roughly fifty-fifty chance of up to roughly maybe a 20% improvement… or feeling worse to some unknown degree! That does not sound like a good deal to me. It certainly doesn’t sound like good medicine.”
END OF QUOTE
As I have made clear in many previous posts, I do fully agree with these latter statements and would add just three points:
- We know that many of the SMT studies completely neglect reporting adverse effects. Therefore it is hardly surprising that no serious complications were on record. Yet, we know that they do occur with sad regularity.
- None of the studies controlled for placebo effects. It is therefore possible – I would say even likely – that a large chunk of the observed benefit is not due to SMT per se but to a placebo response.
- It seems more than questionable whether the benefits of SMT outweigh its risks.
This new systematic review by proponents of homeopathy (and supported by a grant from the Manchester Homeopathic Clinic) tested the null hypothesis that “the main outcome of treatment using a non-individualised (standardised) homeopathic medicine is indistinguishable from that of placebo“. An additional aim was to quantify any condition-specific effects of non-individualised homeopathic treatment. In reporting this paper, I will stay very close to the published text hoping that this avoids both misunderstandings and accusations of bias on my side:
Literature search strategy, data extraction and statistical analysis followed the methods described in a pre-published protocol. A trial comprised ‘reliable evidence’ if its risk of bias was low or it was unclear in one specified domain of assessment. ‘Effect size’ was reported as standardised mean difference (SMD), with arithmetic transformation for dichotomous data carried out as required; a negative SMD indicated an effect favouring homeopathy.
The authors excluded the following types of trials: studies of crossover design; of radionically prepared homeopathic medicines; of homeopathic prophylaxis; of homeopathy combined with other (complementary or conventional) intervention; for other specified reasons. The final explicit exclusion criterion was that there was obviously no blinding of participants and practitioners to the assigned intervention.
Forty-eight different clinical conditions were represented in 75 eligible RCTs; 49 were classed as ‘high risk of bias’ and 23 as ‘uncertain risk of bias’; the remaining three trials displayed sufficiently low risk of bias to be designated reliable evidence. Fifty-four trials had extractable data: pooled SMD was -0.33 (95% confidence interval (CI) -0.44, -0.21), which was attenuated to -0.16 (95% CI -0.31, -0.02) after adjustment for publication bias. The three trials with reliable evidence yielded a non-significant pooled SMD: -0.18 (95% CI -0.46, 0.09). There was no single clinical condition for which meta-analysis produced reliable evidence.
A meta-regression was performed to test specifically for within-group differences for each sub-group. The results showed that there were no significant differences between studies that were and were not:
- included in previous meta-analyses (p = 0.447);
- pilot studies (p = 0.316);
- greater than the median sample (p = 0.298);
- potency ≥ 12C (p = 0.221);
- imputed for meta-analysis (p = 0.384);
- free from vested interest (p = 0.391);
- acute/chronic (p = 0.796);
- different types of homeopathy (p = 0.217).
After removal of ‘C’-rated trials, the pooled SMD still favoured homeopathy for all sub-groups, but was statistically non-significant for 10 of the 18 (included in previous meta-analysis; pilot study; sample size > median; potency ≥12C; data imputed; free of vested interest; not free of vested interest; combination medicine; single medicine; chronic condition). There remained no significant differences between sub-groups—with the exception of the analysis for sample size > median (p = 0.028).
Meta-analyses were possible for eight clinical conditions, each analysis comprising two to 5 trials. A statistically significant pooled SMD, favouring homeopathy, was observed for influenza (N = 2), irritable bowel syndrome (N = 2), and seasonal allergic rhinitis (N = 5). Each of the other five clinical conditions (allergic asthma, arsenic toxicity, infertility due to amenorrhoea, muscle soreness, post-operative pain) showed non-significant findings. Removal of ‘C’-rated trials negated the statistically significant effect for seasonal allergic rhinitis and left the non-significant effect for post-operative pain unchanged; no higher-rated trials were available for additional analysis of arsenic toxicity, infertility due to amenorrhoea or irritable bowel syndrome. There were no ‘C’-rated trials to remove for allergic asthma, influenza, or muscle soreness. Thus, influenza was the only clinical condition for which higher-rated trials indicated a statistically significant effect; neither of its contributing trials, however, comprised reliable evidence.
The authors concluded that the quality of the body of evidence is low. A meta-analysis of all extractable data leads to rejection of our null hypothesis, but analysis of a small sub-group of reliable evidence does not support that rejection. Reliable evidence is lacking in condition-specific meta-analyses, precluding relevant conclusions. Better designed and more rigorous RCTs are needed in order to develop an evidence base that can decisively provide reliable effect estimates of non-individualised homeopathic treatment.
I am sure that this paper will lead to lively discussions in the comments section of this blog. I will therefore restrict my comments to a bare minimum.
In my view, this new meta-analysis essentially yield a negative result and confirms most previous, similar reviews.
- It confirms Linde’s conclusion that “insufficient evidence from these studies that homeopathy is clearly efficacious for any single clinical condition”.
- It confirms Linde’s conclusion that “there was clear evidence that studies with better methodological quality tended to yield less positive results”.
- It confirms Kleinjen’s conclusion that “most trials are of low methodological quality”.
- It also confirms the results of the meta-analysis by Shang et al (much-maligned by homeopaths) than “finding is compatible with the notion that the clinical effects of homoeopathy are placebo effects.”
- Finally, it confirms the conclusion of the analysis of the Australian National Health and Medical Research Council: “Homeopathy should not be used to treat health conditions that are chronic, serious, or could become serious. People who choose homeopathy may put their health at risk if they reject or delay treatments for which there is good evidence for safety and effectiveness. People who are considering whether to use homeopathy should first get advice from a registered health practitioner. Those who use homeopathy should tell their health practitioner and should keep taking any prescribed treatments.”
Another not entirely unimportant point that often gets missed in these discussions is this: even if we believe (which I do not) the most optimistic interpretation of these (and similar data) by homeopaths, we ought to point out that there is no evidence whatsoever that homeopathy cures anything. At the very best it provides marginal symptomatic relief. Yet, the claim of homeopaths that we hear constantly is that homeopathy is a causal and curative therapy.
The first author of the new meta-analysis is an employee of the Homeopathy Research Institute. We might therefore forgive him that he he repeatedly insists on dwelling on largely irrelevant (i. e. based on unreliable primary studies) findings. It seems obvious that firm conclusions can only be based on reliable data. I therefore disregard those analyses and conclusions that include such studies.
In the discussion, the authors of the new meta-analysis confirm my interpretation this by stating that they “reject the null hypothesis (non-individualised homeopathy is indistinguishable from placebo) on the basis of pooling all studies, but fail to reject the null hypothesis on the basis of the reliable evidence only.” And, in the long version of their conclusions, we find this remarkable statement: “Our meta-analysis of the current reliable evidence base therefore fails to reject the null hypothesis that the outcome of treatment using a non-individualised homeopathic medicine is not distinguishable from that using placebo.” A most torturous way of stating the obvious: the more reliable data show no difference between homeopathy and placebo.
Acupuncture is little more than a theatrical placebo! If we confront an acupuncture fan with this statement, he/she is bound to argue that there are some indications for which the evidence is soundly positive. One of these conditions, they would claim, is nausea and vomiting. But how strong are these data? A new study sheds some light on this question.
The objective of this RCT was to evaluate if consumption of antiemetics and eating capacity differed between patients receiving verum acupuncture, sham acupuncture, or standard care only during radiotherapy. Patients were randomized to verum (n = 100) or sham (n = 100) acupuncture (telescopic blunt sham needle) (12 sessions) and registered daily their consumption of antiemetics and eating capacity. A standard care group (n = 62) received standard care only.
The results show that more patients in the verum and the sham acupuncture group did not need any antiemetic medications, as compared to the standard care group after receiving 27 Gray dose of radiotherapy. More patients in the verum and the sham acupuncture group were capable of eating as usual, compared to the standard care group. Patients receiving acupuncture had lower consumption of antiemetics and better eating capacity than patients receiving standard antiemetic care, plausible by nonspecific effects of the extra care during acupuncture.
The authors concluded that patients receiving acupuncture had lower consumption of antiemetics and better eating capacity than patients receiving standard antiemetic care, plausible by nonspecific effects of the extra care during acupuncture.
I find these conclusions odd because they seem to state that acupuncture was more effective than standard care. Subsequently – almost as an afterthought – they mention that its effects are brought about by nonspecific effects. This is grossly misleading, in my view.
The study was designed as a comparison between real and sham acupuncture, and the standard care group was not a randomised comparison group. Therefore, the main result and conclusion has to focus on the comparison between verum and sham acupuncture. This comparison shows that the two did not produce different result. Therefore, the study shows that acupuncture was not effective.
A much more reasonable conclusion would have been: THIS STUDY FAILED TO FIND SIGNIFICANT EFFECTS OF ACUPUNCTURE BEYOND PLACEBO.
The title of the press-release was impressive: ‘Columbia and Harvard Researchers Find Yoga and Controlled Breathing Reduce Depressive Symptoms’. It certainly awoke my interest and I looked up the original article. Sadly, it also awoke the interest of many journalists, and the study was reported widely – and, as we shall see, mostly wrongly.
According to its authors, the aims of this study were “to assess the effects of an intervention of Iyengar yoga and coherent breathing at five breaths per minute on depressive symptoms and to determine optimal intervention yoga dosing for future studies in individuals with major depressive disorder (MDD)”.
Thirty two subjects were randomized to either the high-dose group (HDG) or low-dose group (LDG) for a 12-week intervention of three or two intervention classes per week, respectively. Eligible subjects were 18–64 years old with MDD, had baseline Beck Depression Inventory-II (BDI-II) scores ≥14, and were either on no antidepressant medications or on a stable dose of antidepressants for ≥3 months. The intervention included 90-min classes plus homework. Outcome measures were BDI-II scores and intervention compliance.
Fifteen HDG and 15 LDG subjects completed the intervention. BDI-II scores at screening and compliance did not differ between groups. BDI-II scores declined significantly from screening (24.6 ± 1.7) to week 12 (6.0 ± 3.8) for the HDG (–18.6 ± 6.6; p < 0.001), and from screening (27.7 ± 2.1) to week 12 (10.1 ± 7.9) in the LDG. There were no significant differences between groups, based on response (i.e., >50% decrease in BDI-II scores; p = 0.65) for the HDG (13/15 subjects) and LDG (11/15 subjects) or remission (i.e., number of subjects with BDI-II scores <14; p = 1.00) for the HDG (14/15 subjects) and LDG (13/15 subjects) after the 12-week intervention, although a greater number of subjects in the HDG had 12-week BDI-II scores ≤10 (p = 0.04).
The authors concluded that this dosing study provides evidence that participation in an intervention composed of Iyengar yoga and coherent breathing is associated with a significant reduction in depressive symptoms for individuals with MDD, both on and off antidepressant medications. The HDG and LDG showed no significant differences in compliance or in rates of response or remission. Although the HDG had significantly more subjects with BDI-II scores ≤10 at week 12, twice weekly classes (plus home practice) may rates of response or remission. Although the HDG, thrice weekly classes (plus home practice) had significantly more subjects with BDI-II scores ≤10 at week 12, the LDG, twice weekly classes (plus home practice) may constitute a less burdensome but still effective way to gain the mood benefits from the intervention. This study supports the use of an Iyengar yoga and coherent breathing intervention as a treatment to alleviate depressive symptoms in MDD.
The authors also warn that this study must be interpreted with caution and point out several limitations:
- the small sample size,
- the lack of an active non-yoga control (both groups received Iyengar yoga plus coherent breathing),
- the supportive group environment and multiple subject interactions with research staff each week could have contributed to the reduction in depressive symptoms,
- the results cannot be generalized to MDD with more acute suicidality or more severe symptoms.
In the press-release, we are told that “The practical findings for this integrative health intervention are that it worked for participants who were both on and off antidepressant medications, and for those time-pressed, the two times per week dose also performed well,” says The Journal of Alternative and Complementary Medicine Editor-in-Chief John Weeks
At the end of the paper, we learn that the authors, Dr. Brown and Dr. Gerbarg, teach and have published Breath∼Body∼Mind©, a technique that uses coherent breathing. Dr. Streeter is certified to teach Breath∼Body∼Mind©. No competing financial interests exist for the remaining authors.
Taking all of these issues into account, my take on this study is different and a little more critical:
- The observed effects might have nothing at all to do with the specific intervention tested.
- The trial was poorly designed.
- The aims of the study are not within reach of its methodology.
- The trial lacked a proper control group.
- It was published in a journal that has no credibility.
- The limitations outlined by the authors are merely the tip of an entire iceberg of fatal flaws.
- The press-release is irresponsibly exaggerated.
- The authors have little incentive to truly test their therapy and seem to use research as a means of promoting their business.
Today is WORLD CANCER DAY.
Yesterday I prepared you for this event by alerting you to a disgusting cancer scam, and today I want to contrast this with more encouraging news from the strange world of alternative medicine. So I searched Medline for a fitting, recent publication showing at least some value of an alternative therapy. Believe me, such papers are few and far between.
But here is one:
The aim of this Cochrane review was to assess effects of yoga on health-related quality of life, mental health and cancer-related symptoms among women with a diagnosis of breast cancer who are receiving active treatment or have completed treatment. The authors conducted extensive literature searches and applied no language restrictions. RCTs were eligible, if they (1) compared yoga interventions to no therapy or to any other active therapy in women with a diagnosis of breast cancer, and (2) assessed at least one of the primary outcomes on patient-reported instruments, including health-related quality of life, depression, anxiety, fatigue or sleep disturbances.
Two review authors independently collected data on methods and results. The risk of publication bias was assessed through visual analysis of funnel plot symmetry and heterogeneity between studies. Subgroup analyses were conducted for current treatment status, time since diagnosis, stage of cancer and type of yoga intervention.
Twenty-four studies with a total of 2166 participants were included, 23 of which provided data for meta-analysis. Thirteen studies had low risk of selection bias, five studies reported adequate blinding of outcome assessment and 15 studies had low risk of attrition bias. Seventeen studies that compared yoga versus no therapy provided moderate-quality evidence showing that yoga improved health-related quality of life, reduced fatigue and reduced sleep disturbances in the short term. There was an overall low risk of publication bias.
Yoga did not appear to reduce depression or anxiety in the short term and had no medium-term effects on health-related quality of life or fatigue. Four studies that compared yoga versus psychosocial/educational interventions provided moderate-quality evidence indicating that yoga can reduce depression, anxiety and fatigue in the short term. Very low-quality evidence showed no short-term effects on health-related quality of life or sleep disturbances. Three studies that compared yoga to exercise presented very low-quality evidence showing no short-term effects on health-related quality of life or fatigue. No trial provided safety-related data.
The authors concluded that moderate-quality evidence supports the recommendation of yoga as a supportive intervention for improving health-related quality of life and reducing fatigue and sleep disturbances when compared with no therapy, as well as for reducing depression, anxiety and fatigue, when compared with psychosocial/educational interventions. Very low-quality evidence suggests that yoga might be as effective as other exercise interventions and might be used as an alternative to other exercise programmes.
As I said, this is most encouraging. Many women are attracted by yoga, and the news that it can improve their symptoms is clearly positive. I have said it often, but I say it again: in supportive and palliative cancer care there might be an important role for several forms of CAM. One has to make sure though that they do not interfere with conventional treatments, and – this is very important – cancer patients must not be misled to believe that they can be used to treat or cure cancer. Finally, patients should not pitch their hopes too high: the effect sizes of alternative treatments in cancer care are invariably small or modest which means that they can help to reduce symptoms but are unlikely to get rid of them completely.
On an even more sober note, I have to reiterate that none of the trials included in the above review reported safety data (yoga is not totally devoid of adverse-effects!). This is an almost stereotypical finding when assessing clinical trials of alternative therapies. It discloses a clear and unacceptable breach of publication ethics. How can we ever get a realistic impression of the risks of alternative medicine, if adverse effects remain unreported? It is high time that researchers, authors, journal editors and reviewers get this message and behave accordingly.
Acupuncture for hot flushes?
I know, to rational thinkers this sounds bizarre – but, actually, there are quite a few studies on the subject. Enough evidence for me to have published not one but four different systematic reviews on the subject.
The first (2009) concluded that “the evidence is not convincing to suggest acupuncture is an effective treatment of hot flash in patients with breast cancer. Further research is required to investigate whether there are specific effects of acupuncture for treating hot flash in patients with breast cancer.”
The second (also 2009) concluded that “sham-controlled RCTs fail to show specific effects of acupuncture for control of menopausal hot flushes. More rigorous research seems warranted.”
The third (again 2009) concluded that “the evidence is not convincing to suggest acupuncture is an effective treatment for hot flush in patients with prostate cancer. Further research is required to investigate whether acupuncture has hot-flush-specific effects.”
The fourth (2013), a Cochrane review, “found insufficient evidence to determine whether acupuncture is effective for controlling menopausal vasomotor symptoms. When we compared acupuncture with sham acupuncture, there was no evidence of a significant difference in their effect on menopausal vasomotor symptoms. When we compared acupuncture with no treatment there appeared to be a benefit from acupuncture, but acupuncture appeared to be less effective than HT. These findings should be treated with great caution as the evidence was low or very low quality and the studies comparing acupuncture versus no treatment or HT were not controlled with sham acupuncture or placebo HT. Data on adverse effects were lacking.”
And now, there is a new systematic review; its aim was to evaluate the effectiveness of acupuncture for treatment of hot flash in women with breast cancer. The searches identified 12 relevant articles for inclusion. The meta-analysis without any subgroup or moderator failed to show favorable effects of acupuncture on reducing the frequency of hot flashes after intervention (n = 680, SMD = − 0.478, 95 % CI −0.397 to 0.241, P = 0.632) but exhibited marked heterogeneity of the results (Q value = 83.200, P = 0.000, I^2 = 83.17, τ^2 = 0.310). The authors concluded that “the meta-analysis used had contradictory results and yielded no convincing evidence to suggest that acupuncture was an effective treatment of hot flash in patients with breast cancer. Multi-central studies including large sample size are required to investigate the efficiency of acupuncture for treating hot flash in patients with breast cancer.”
What follows from all this?
- The collective evidence does NOT seem to suggest that acupuncture is a promising treatment for hot flushes of any aetiology.
- The new paper is unimpressive, in my view. I don’t see the necessity for it, particularly as it fails to include a formal assessment of the methodological quality of the primary studies (contrary to what the authors state in the abstract) and because it merely includes articles published in English (with a therapy like acupuncture, such a strategy seems ridiculous, in my view).
- I predict that future studies will suggest an effect – as long as they are designed such that they are open to bias.
- Rigorous trials are likely to show an effect beyond placebo.
- My own reviews typically state that MORE RESEARCH IS NEEDED. I regret such statements and would today no longer issue them.
I have blogged about the herbal antidepressant before; for instance about the fact that it can cause potentially dangerous herb-drug interactions. When taken alone, however, it seems to be both safe and efficacious in reducing the symptoms of depression. This notion has just been confirmed yet again.
A new systematic review evaluated St. John’s wort (SJW) for the treatment of Major Depressive Disorder (MDD). The objectives of this review were to (1) evaluate the efficacy and safety of SJW in adults with MDD compared to placebo and active comparator and (2) evaluate whether the effects vary by severity of MDD.
The authors searched 9 electronic databases and existing reviews to November 2014. Two independent reviewers screened the citations, abstracted the data, and assessed the risk of bias. They included randomized controlled trials (RCTs) examining the effect of at least a 4-week administration of SJW on depression outcomes against placebo or active comparator in adults with MDD. Risk of bias was assessed using the Cochrane Risk of Bias tool and USPSTF criteria. Quality of evidence (QoE) was assessed using the GRADE approach.
Thirty-five studies examining 6993 patients met inclusion criteria; 8 studies evaluated a SJW extract that combined 0.3 % hypericin and 1-4 % hyperforin. SJW was associated with more treatment responders than placebo (relative risk [RR] 1.53; 95 % confidence interval [CI] 1.19, 1.97; I(2) 79 %; 18 RCTs; N = 2922, moderate QoE; standardized mean differences [SMD] 0.49; CI 0.23, 0.74; 16 RCTs; I(2) 89 %, N = 2888, moderate QoE). Compared to antidepressants, SJW participants were less likely to experience adverse events (OR 0.67; CI 0.56, 0.81; 11 RCTs; moderate QoE) with no difference in treatment effectiveness (RR 1.01; CI 0.90, 1.14; 17 RCTs, I(2) 52 %, moderate QoE; SMD -0.03; CI -0.21, 0.15; 14 RCTs; I(2) 74 %; N = 2248, moderate QoE) in mild and moderate depression.
The authors concluded that SJW monotherapy for mild and moderate depression is superior to placebo in improving depression symptoms and not significantly different from antidepressant medication. However, evidence of heterogeneity and a lack of research on severe depression reduce the quality of the evidence. Adverse events reported in RCTs were comparable to placebo and fewer compared with antidepressants. However, assessments were limited due to poor reporting of adverse events and studies were not designed to assess rare events. Consequently, the findings should be interpreted with caution.
This is an excellent review from a reputable and independent team. The findings are therefore trustworthy.
Does that mean that we can now recommend SJW for patients suffering from depression?
Perhaps – but we need to keep an eye on the interaction issue. As a sole treatment, SJW is much safer than conventional antidepressants. But if a patient takes other medicines, we ought to be very careful.
Other currently unresolved issues are the questions of which extract and which dose. At present, there is not enough evidence to provide conclusive answers to either of these, and therefore the enthusiasm of many doctors for prescribing SJW is understandably limited.
Irrespective of these problems, I have to say that SJW is without question one of the biggest ‘success stories’ from the realm of alternative medicine. Pity that there are not more of them!
A website I recently came across promised to teach me 7 things about acupuncture. This sort of thing is always of interest to me; so I read them with interest and found them so remarkable that I decided to reproduce them here:
1. Addiction recovery
Acupuncture calms and relaxes the mind making it easier for people to overcome addictions to drugs, cigarettes, and alcohol by reducing the anxiety and stress they feel when quitting.
2. Helps the body heal itself
The body contains natural pain relief chemicals, such as endorphins and has an amazing capacity for self-healing. Acupuncture helps stimulate the natural healing mechanisms and causes the body to manufacture pain relieving chemicals.
3. Builds a stronger immune system
The body’s immune system is negatively affected by stress, poor diet, illness and certain medical treatments, but acupuncture targets the underlying imbalances naturally and helps it to regain balance.
4. Eliminate that killer hangover
While it may not have been the best choice to finish off that bottle of wine, acupuncture can help the body detox and flush out the morning side effects.
5. Mood stabilizer
If you find yourself snapping at friends, family, or co-workers for unexplained reasons, acupuncture can get to the root of the problem, find the imbalance and help your body return to a healthier state of mind.
6. Chronic stomach problems
Some people suffer from stomach problems and never find the cause. Acupuncture targets your whole body, including the digestive tract and helps it to work in harmony with the rest of the body’s systems.
7. Coping with death
Grief can have an overwhelming effect on the body and manifest itself physically. Acupuncture helps reduce the anxiety of dealing with loss and help you cope with the stress.
END OF QUOTE
The ‘7 things’ are remarkably mislabelled – they should be called 7 lies! Let me explain:
- There are several Cochrane reviews on the subject of acupuncture for various addictions. Here are their conclusions: There is currently no evidence that auricular acupuncture is effective for the treatment of cocaine dependence. The evidence is not of high quality and is inconclusive. Further randomised trials of auricular acupuncture may be justified. There is no clear evidence that acupuncture is effective for smoking cessation. There is currently no evidence that auricular acupuncture is effective for the treatment of cocaine dependence. The evidence is not of high quality and is inconclusive. Further randomised trials of auricular acupuncture may be justified.
- Even if the ‘endorphin story’ is true (in my view, it’s but a theory), there is no good evidence that acupuncture enhances our body’s self-healing mechanisms via endorphins or any other mechanism.
- Stronger immune system? My foot! I have no idea where this claim comes from, certainly not from anything resembling good evidence.
- Acupuncture for hangover or detox? This is just a stupid joke with no evidential support. I imagine, however, that it is superb marketing.
- The same applies to acupuncture to ‘stabilize’ your mood.
- Unexplained stomach problems? Go and see a doctor! Here is the conclusion of a Cochrane review related to IBS which is one of the more common unexplained stomach complaint: Sham-controlled RCTs have found no benefits of acupuncture relative to a credible sham acupuncture control for IBS symptom severity or IBS-related quality of life.
- I am not aware of any good evidence to show that acupuncture could ease the grieving process; I even doubt that this would be such a good or desirable thing: grieving is a necessary and essential process.
So, what we have here are essentially 7 fat lies. Yes, I know, the literature and the internet are full of them. And I suspect that they are a prominent reason why acupuncture is fairly popular today. Lies are a major marketing tool of acupuncturists – but that does not mean that we should let them get away with them!
Bogus claims may be good for the cash flow of alternative practitioners, but they are certainly not good for our health and well-being; in fact, they can cost lives!!!
IN THIS SPIRIT, LET ME ADD SEVEN THINGS YOU DO NEED TO KNOW ABOUT ACUPUNCTURE
- Traditional acupuncture is based on complete hocus pocus and is therefore implausible.
- ‘Western’ acupuncture is based on endorphin and other theories, which are little more than that and at best THEORIES.
- Acupuncture is often promoted as a ‘cure all’ which is implausible and not supported by evidence.
- Meridians, acupoints chi and all the other things acupuncturists claim to exist are pure fantasy.
- For a small list of symptoms, acupuncture is backed up by some evidence, but this is less than convincing and could well turn out to rely on little more than placebo.
- The claim of acupuncturists that acupuncture is entirely safe is false.
- Acupuncture studies from China cannot be trusted.
In alternative medicine, good evidence is like gold dust and good evidence showing that alternative therapies are efficacious is even rarer. Therefore, I was delighted to come across a brand-new article from an institution that should stand for reliable information: the NIH, no less.
According to its authors, this new article “examines the clinical trial evidence for the efficacy and safety of several specific approaches—acupuncture, manipulation, massage therapy, relaxation techniques including meditation, selected natural product supplements (chondroitin, glucosamine, methylsulfonylmethane, S-adenosylmethionine), tai chi, and yoga—as used to manage chronic pain and related disability associated with back pain, fibromyalgia, osteoarthritis, neck pain, and severe headaches or migraines.”
The results of this huge undertaking are complex, of course, but in a nutshell they are at least partly positive for alternative medicine. Specifically, the authors state that “based on a preponderance of positive trials vs negative trials, current evidence suggests that the following complementary approaches may help some patients manage their painful health conditions: acupuncture and yoga for back pain; acupuncture and tai chi for OA of the knee; massage therapy for neck pain with adequate doses and for short-term benefit; and relaxation techniques for severe headaches and migraine. Weaker evidence suggests that massage therapy, SM, and osteopathic manipulation might also be of some benefit to those with back pain, and relaxation approaches and tai chi might help those with fibromyalgia.”
This is excellent news! Finally, we have data from an authoritative source showing that some alternative treatments can be recommended for common pain conditions.
Hold on, not so fast! Yes, the NIH is a most respectable organisation, but we must not blindly accept anything of importance just because it appears to come form a reputable source. Let’s look a bit closer at the actual evidence provided by the authors of this paper.
Reading the article carefully, it is impossible not to get troubled. Here are a few points that concern me most:
- the safety of a therapy cannot be evaluated on the basis of data from RCTs (particularly as it has been shown repeatedly that trials of alternative therapies often fail to report adverse effects); much larger samples are needed for that; any statements about safety in the aims of the paper are therefore misplaced;
- the authors talk about efficacy but seem to mean effectiveness;
- the authors only included RCTs from the US which must result in a skewed and incomplete picture;
- the article is from the National Center for Complementary and Integrative Health which is part of the NIH but which has been criticised repeatedly for being biased in favour of alternative medicine;
- not all of the authors seem to be NIH staff, and I cannot find a declaration of conflicts of interest;
- the discussion of the paper totally lacks any critical thinking;
- there is no assessment of the quality of the trials included in this review.
My last point is by far the most important. A summary of this nature that fails to take into account the numerous limitations of the primary data is, I think, as good as worthless. As I know most of the RCTs included in the analyses, I predict that the overall picture generated by this review would have changed substantially, if the risks of bias in the primary studies had been accounted for.
Personally, I find it lamentable that such a potentially worthy exercise ended up employing such lousy methodology. Perhaps even more lamentable is the fact that the NIH (or one of its Centers) can descend that low; to mislead the public in this way borders on scientific misconduct and is, in my view, unethical and unacceptable.
In part one, we have dealt with three common tricks used by quacks to convince the public to consult them and to keep coming back for more. It has been pointed out to me that some of these tricks are used not just by alternative practitioners but also by real physicians. This is, of course, absolutely true. A quack can be defined as “a person who dishonestly claims to have special knowledge and skill in some field, typically medicine.” Therefore real doctors can be real quacks, of course. I happen to have an interest mainly in alternative medicine; that’s why I write about these type of quacks (if it helps keeping you blood pressure within the limits of normal, I can tell you that I occasionally also published about quackery in mainstream medicine, for instance here).
Anyway, now it is time to continue this series of posts by discussing three further common deceptions used by quacks.
A CURE TAKES A LONG TIME
Imagine a scenario where, even after, several therapy sessions, a patient’s condition has not improved. Let’s assume the problem is back pain, and that it has not improved a bit despite the treatments and the money spent on it. Surely, many patients in such a situation are sooner or later going to give up. They will have had enough! And this is, of course, a serious threat to the practitioner’s cash flow.
Luckily, there is a popular ploy to minimize the risk: the practitioner merely has to explain that the patient’s condition has been going on for a very long time (if, in the above scenario, this were not the case, the practitioner would explain that the pain might be relatively recent but the underlying condition is chronic). This means that a cure will also have to take a very long time – after all, Rome was not built in one day!
This plea to carry on with the ineffective treatments despite any improvement of symptoms is usually not justifiable on medical grounds. It is, however, entirely justifiable on the basis of financial considerations of the practitioners. They rely on their patients’ regular payments and will therefore think of all sorts of means to achieve this aim.
Take my advice and see a clinician who can help you within a reasonable and predictable amount of time.
IT’S DUE TO THE POISONS YOUR DOCTOR GAVE YOU
In the pursuit of a healthy cash-flow, almost all means seem to be allowed – even the fabrication of the bogus notion that the reasons for the patient’s problem were the poisonous drugs prescribed by her doctor who, of course, is in cahoots with BIG PHARMA. Alternative medicine thrives on conspiracy theories, and the one of the evil ‘medical mafia’ is one of the all-time favourites. It enables scrupulous practitioners to instil a good dose of fear into the minds of their patients, a fear that minimises the risk of them returning to real medicine.
My advice is that alternative practitioners who habitually use this or any other conspiracy theory should be avoided at all costs.
The notion that alternative medicine takes care of the whole person is a most attractive and powerful ploy. Never mind that nothing could be further from being holistic than, for instance, diagnosing conditions by looking at a patient’s iris (iridology), or focussing on her spine (chiropractic, osteopathy), or massaging the soles of her feet (reflexology). And never mind that any type of good conventional medicine is by definition holistic. What counts is the label, and ‘holistic’ is a most desirable one, indeed. Nothing sells quackery better than holism.
Most alternative practitioners call themselves holistic and they rub the holism into the minds of their patients whenever and however they can. This insistence on holism has the added advantage that they have seemingly plausible excuses for their therapeutic failures.
Imagine a patient consulting a practitioner with depression and, even after prolonged treatment, her condition is unchanged. Even in such a situation, the holistic practitioner does not need to despair: he will point out that he never treats diagnostic labels but always the whole person. Therefore, the patient’s depression might not have changed, but surely other issues have improved… and, if the patient introspects a little, she might find that her appetite has improved, that her indigestion is better, or that her tennis elbow is less painful (some things always change given enough time). The holism of quacks may be a false pretence, but its benefits for the practitioner are obvious.
My advice: take holism from quacks with a pinch of salt.