MD, PhD, FMedSci, FRSB, FRCP, FRCPEd

herbal medicine

Traditional and folk remedies have been repeatedly been reported to contain toxic amounts of lead. I discussed this problem before; see here, here, and here. Recently, two further papers were published which are relevant in this context.

In the first article, Indian researchers presented a large series of patients with lead poisoning due to intake of Ayurvedic medicines, all of whom presented with unexplained abdominal pain.

In a retrospective, observational case series from a tertiary care center in India, the charts of patients who underwent blood lead level (BLL) testing as a part of workup for unexplained abdominal pain between 2005 and 2013 were reviewed. The patients with lead intoxication (BLLs >25 μg/dl) were identified and demographics, history, possible risk factors, clinical presentation and investigations were reviewed. Treatment details, duration, time to symptomatic recovery, laboratory follow-up and adverse events during therapy were recorded.

BLLs were tested in 786 patients with unexplained abdominal pain, and high levels were identified in 75 (9.5%) patients of which a majority (73 patients, 9.3%) had history of Ayurvedic medication intake and only two had occupational exposure. Five randomly chosen Ayurvedic medications were analyzed and lead levels were impermissibly high (14-34,950 ppm) in all of them. Besides pain in abdomen, other presenting complaints were constipation, hypertension, neurological symptoms and acute kidney injury. Anemia and abnormal liver biochemical tests were observed in all the 73 patients. Discontinuing the Ayurvedic medicines and chelation with d-penicillamine led to improvement in symptoms and reduction in BLLs in all patients within 3-4 months.

The authors of this paper concluded that the patients presenting with severe recurrent abdominal pain, anemia and history of use of Ayurvedic medicines should be evaluated for lead toxicity. Early diagnosis in such cases can prevent unnecessary investigations and interventions, and permits early commencement of the treatment.

The second article German researchers analysed 20 such ‘natural health products’ (NHPs) from patients with intoxication symptoms. Their findings revealed alarming high concentrations of mercury and/or lead (the first one in “therapeutic” doses). 82 % of the studied NHPs contained lead concentrations above the EU limit for dietary supplements. 62 % of the samples exceeded the limit values for mercury. Elevated blood lead and mercury levels in patients along with clinical intoxication symptoms corroborate the causal assumption of intoxication (s).

The authors concluded that, for NHPs there is evidence on a distinct toxicological risk with alarming low awareness for a possible intoxication which prevents potentially life-saving diagnostic steps in affected cases. In many cases patients do not communicate the events to their physicians or the local health authority so that case reports (e.g. the BfR-DocCentre) are missing. Thus, there is an urgent need to raise awareness and to initiate more suitable monitory systems (e.g. National Monitoring of Poisonings) and control practice protecting the public.

The authors of the 2nd paper also reported a detailed case report:

Patient, male, 31 with BMI slightly below normal, non-smoker, was referred to the neurological department of the university clinic with severe peripheral poly neuropathy and sensory motor symptoms with neuropathic pain. The patient was in good general state of health until approximately 3 weeks before hospital admission; he spent his holiday in Himalaya region and came back with headaches and fatigue. He was taking pain medication without any relieve; his routine blood values were normal. He claimed to take no further medications. Since poly neuropathy and fatigue could be caused by pesticides or other poisoning, i.e. heavy metals, we have been consulted for taking a detailed exposure history. While in the clinic, 3 different NHPs were found in form of globules, (a, b, c for morning, lunch time and evening respectively), which he imported from his trip to Asia and ingested 3 times a day against stress. We have analyzed these 3 NHPs and found: 45 μg/g, 53,000 μg/g and 28 μg/g lead (for morning, midday and evening globules, respectively) and additionally 15.72 μg/g mercury in the “evening globules”. Since, his blood metal levels were: 340 μg/L Pb and 15 μg/L Hg a diagnosis of heavy metal intoxication was made. Slowly occurring clinical recovery after starting chelation therapy corroborated with the causal assumption proposed. He was released for further consultancy to his family physician. The administrated treatment and the improvement of his status corroborate lead and mercury intoxication.

The researchers finish their paper with this stark warning: In many countries, even in Germany, no comprehensive nutria vigilance- or poisoning monitoring system exists, from which the application of natural health products and the consequent intoxication can be estimated. There is also an urgent need for comprehensive scientifically evaluated studies based on efficient national monitoring to protect the consumer from heavy metal intoxications. There are no comparable surveillance systems like the US ABLES program for lead- and no surveillance systems for mercury exposures allowing any comparisons. Exposure to lead and mercury from environmental sources remains an overlooked and serious public health risk.

The aim of this paper was to systematically review effectiveness, safety, and robustness of evidence for complementary and alternative medicine in managing premature ejaculation (PE). Nine databases were searched through September 2015. Randomized controlled trials (RCTs) evaluating complementary and alternative medicine for PE were included. Studies were included if they reported on intravaginal ejaculatory latency time (IELT) and/or another validated PE measurement. Adverse effects were summarized.

Ten RCTs were included. Two assessed acupuncture, five assessed Chinese herbal medicine, one assessed Ayurvedic herbal medicine, and two assessed topical “severance secret” cream. Risk of bias was unclear in all studies because of unclear allocation concealment or blinding, and only five studies reported stopwatch-measured IELT. Acupuncture slightly increased IELT over placebo in one study (mean difference [MD] = 0.55 minute, P = .001). In another study, Ayurvedic herbal medicine slightly increased IELT over placebo (MD = 0.80 minute, P = .001). Topical severance secret cream increased IELT over placebo in two studies (MD = 8.60 minutes, P < .001), although inclusion criteria were broad (IELT < 3 minutes). Three studies comparing Chinese herbal medicine with selective serotonin reuptake inhibitors (SSRIs) favored SSRIs (MD = 1.01 minutes, P = .02). However, combination treatment with Chinese medicine plus SSRIs improved IELT over SSRIs alone (two studies; MD = 1.92 minutes, P < .00001) and over Chinese medicine alone (two studies; MD = 2.52 minutes, P < .00001). Adverse effects were not consistently assessed but where reported were generally mild.

The authors concluded that there is preliminary evidence for the effectiveness of acupuncture, Chinese herbal medicine, Ayurvedic herbal medicine, and topical severance secret cream in improving IELT and other outcomes. However, results are based on clinically heterogeneous studies of unclear quality. There are sparse data on adverse effects or potential for drug interactions. Further well-conducted randomized controlled trials would be valuable.

One has to be an optimist to agree that this constitutes ‘preliminary evidence for the effectiveness of acupuncture, Chinese herbal medicine, Ayurvedic herbal medicine, and topical severance secret cream in improving IELT and other outcomes.’ In the discussion section, the authors stress that  “…all 10 studies were classed as having an overall unclear risk of bias because of unclear reporting of allocation concealment (all 10 studies) and unclear blinding of participants and personnel (five studies).” This hardly allows even a preliminary conclusion, in my view.

So, what DOES this review show? I think it demonstrates that

  • alternative therapies are being touted and occasionally tested for even the most unlikely conditions,
  • the quality of the studies is generally too poor to justify the research (particularly in an area as intrusive as PE),
  • clinical trials often seem to be used not for finding answers but for promotion,
  • in alternative medicine, trialists regularly violate research ethics by failing to report adverse effects.

 

 

In the realm of alternative medicine, the Internet is a double-edged sword. It can be most useful to many, particularly to those who are able to think critically. To those who do not have this ability, it can be outright dangerous. We have researched this area in several way and always arrived at this very conclusion. For instance, we evaluated websites providing advice for cancer patients and concluded that “the most popular websites on complementary and alternative medicine for cancer offer information of extremely variable quality. Many endorse unproven therapies and some are outright dangerous.”

This makes it abundantly clear that, for some, the Internet can become a danger to their health and life. Recently I was reminded of this fact when I saw this website entitled ‘Foods that will naturally cleanse your arteries’. Its message is instantly clear, particularly as it provides this impressive drawing.

.

The implication here is that we can all clear our arteries of atherosclerotic plaques by eating the right foods. The site also lists the exact foods. Here they are:

START OF QUOTE

Salmon

Salmon is one of the best heart foods as it is packed with healthy fats which reduce cholesterol, triglycerides, and inflammation. However you must make sure that the fish is organic.

 

Orange juice

Orange juice is rich in antioxidants which strengthens the blood vessels and lowers blood pressure. Simply drink 2 glasses of fresh orange juice a day and you’re good to go.

 

Coffee

According to numerous studies 2-4 cups of coffee a day can significantly reduce the risk of stroke and heart attack by 20%. However don’t drink excessively as it may cause problems with your digestion.

 

Nuts

Nuts are packed with omega-3 fatty acids, healthy properties and unsaturated fats which regulate your memory, cholesterol and prevent joint pain.

 

Persimmon fruit

The persimmon fruit is packed with fiber and sterols which help lower cholesterol. It makes a great addition to salads and cereals

 

Turmeric

Curcumin, the active ingredient in turmeric provides a large variety of health benefits. It helps reduce tissue inflammation and prevents overactive fat accumulation. Feel free to add it to your meals or to your tasty cup of tea.

 

Green tea

Aside from having a soothing effect, green tea helps energize the whole body, boost the metabolism and lower the absorption of cholesterol. Just drink 1-2 cups of green tea a day and you have nothing to worry about.

 

Cheese

Cheese can also help lower blood pressure and cholesterol.

 

Watermelon

Watermelon is the most delicious summer fruit. But aside from its amazing taste, it also improves the production of nitric oxide which enhances the function of the blood vessels.

 

Whole grain

Whole grains are rich in fiber content which helps lower cholesterol and cholesterol accumulation in the arteries. Consume more whole grain bread, brown rice and oats.

 

Cranberries

Cranberries have been long known to be the richest source of potassium. Due to this, they can easily lower bad cholesterol and increase the good one. 2 glasses of cranberry juice a day can lower the risk of heart attack by 40%.

 

Seaweed

Seaweeds are packed with vitamins, proteins, minerals and carotenoids which easily regulate your blood pressure.

 

Cinnamon

Cinnamon prevents buildups in the arteries and lower cholesterol.

 

Pomegranate

It is an exotic fruit that provides a healthy portion of phytochemicals. These improve the production of nitric oxide, and boost circulation. Add pomegranate seeds to your salads.

 

Spinach

It is high in folic acid and potassium. You need this to lower your blood pressure, strengthen muscles, and prevent heart attack.

 

Broccoli

Broccoli is rich in vitamin K, which help lower blood pressure and cholesterol when eaten steam-cooked or raw.

 

Olive oil

Olive oil helps maintain your health at its peak. Be sure to use cold-pressed oil as it is rich in healthy fats which lower cholesterol and reduce the risk of heart attack by 40%.

 

Asparagus

Asparagus prevents inflammation, clogging and lowers cholesterols. Implement it to dishes, noodles, soups or potatoes.

 

Blueberries

Blueberries are high in potassium and as we mentioned above, potassium is the key to reducing bad cholesterol and increasing the good one. Drink 2 glasses of blueberry juice a day.

 

Avocado

Avocadoes are without a doubt – one of the healthiest fruits known to man. They’re rich in healthy fat and improve the balance of bad and good cholesterol.

 

END OF QUOTE

As far as I know, there is no good evidence for the claim that any of these 20 foods will clear arteriosclerotic arteries. There is some evidence for fish oil and some for green tea to reduce the risk of cardiovascular disease. But surely, this is quite a different matter than reversing atherosclerotic plaques.

What’s the harm? I believe the potential for harm is obvious: people at high risk of suffering a major cardiovascular event who read such nonsense and believe it might think they can abandon the treatments, drugs and life-styles they have been advised to follow and take. Instead they might eat a bit more of the 20 ingredients listed above. If they did that, many would die.

I think many of us who know better have become far too tolerant of dangerous nonsense of such nature. We tend to think that either nobody is as stupid as to follow such silly advice, or we assume that taking a bit of daft advice will not do much harm. I fear we are wrong on both accounts.

 

 

A recent article in the Guardian revealed that about one third of Australian pharmacists are recommending alternative medicines with little-to-no evidence for their efficacy, including useless homeopathic products and potentially harmful herbal products.

For this survey of 240 Australian pharmacies, mystery shoppers were sent in to speak to a pharmacist at the prescription dispensing counter and ask for advice about feeling stressed. The results show that three per cent of the pharmacists recommended homeopathic products, despite a comprehensive review of all existing studies on homeopathy finding that there is no evidence they work in treating any condition and that ‘people who choose homeopathy may put their health at risk if they reject or delay treatments’. Twenty-six percent of all pharmacists recommended Bach flower remedies to relieve stress. A comprehensive review of all existing studies on Bach flower remedies found no difference between the remedies and placebos. Fifty-nine per cent of people were just told the complementary and alternative product recommended to them worked, and 24% were told the product was scientifically proven, without any evidence being provided to them.

Asked about these findings, Dr Ken Harvey, a prominent Australian expert, said they demonstrated that some pharmacists were failing in their professional duty to consumers. “Pharmacists are giving crazy advice, and it is dangerous in some cases,” he said. “My view is that pharmacists, if they are going to sell these products, need to have a big shining sign over the shelves of the complementary and alternative medicine section that says ‘these products have not been assessed by the government regulators to see if they work, please talk to pharmacist’.Pharamacists are giving poor advice and they clearly have a conflict of interest,” Harvey said.

If you had hoped that in other countries pharmacists behave more responsibly, I must disappoint you. The information available shows that, when it comes to alternative medicine, pharmacists across the globe act much more like shop-keepers than like health care professionals. They are in the habit of putting profit before their duty to abide by the rules of evidence-based practice. And, in doing do, they violate their own ethical codes so regularly that I ask myself why they bothered to even implement one.

On this blog I have written so often about this issue that one could come to the conclusion that I have a bee under my bonnet:

The truth, however, is not that I am the victim of a bee.

The truth is that this is a very important public health issue.

The truth is that pharmacists show little signs of even trying to get to grips with it.

The truth is that pharmacists who sell bogus medicines put profit before professional ethics.

The truth is that such behaviour is not that of health care professionals but that of shop-keepers.

The truth is that I intend to carry on reminding these pharmacists that they are behaving like charlatans.

A new joint position statement of the Italian Society of Diabetology (SID) and of the Italian Society for the Study of Arteriosclerosis (SISA) has recently been published. In the context of this blog, it seems relevant enough for its summary to be reproduced here:

Evidence showed that LDL-cholesterol lowering is associated with a significant cardiovascular risk reduction. The initial therapeutic approach to hypercholesterolaemia includes dietary modifications but the compliance to recommendations is often inadequate. Some dietary components with potential cholesterol-lowering activity are present in small amounts in food. Therefore, in recent years the use of “nutraceuticals” (i.e., nutrients and/or bioactive compounds with potential beneficial effects on human health) has become widespread. Such substances may be added to foods and beverages, or taken as dietary supplements (liquid preparations, tablets, capsules). In the present manuscript, the cholesterol-lowering activity of some nutraceuticals (i.e. fiber, phytosterols, soy, policosanol, red yeast rice and berberine) will be discussed along with: 1) the level of evidence on the cholesterol-lowering efficacy emerging from clinical trial; 2) the possible side effects associated with their use; 3) the categories of patients who could benefit from their use.

DATA SYNTHESIS:

Based on the current literature, the cholesterol-lowering effect of fiber, phytosterols and red yeast rice is consistent and supported by a good level of evidence. Over berberine, there is sufficient evidence showing significant cholesterol-lowering effects, although the results come from studies carried out almost exclusively in Asian populations. Data on the effects of soy are conflicting and, therefore, the strength of recommendation is quite low. The evidence on policosanol is inconclusive.

CONCLUSION:

Although health benefits may arise from the use of nutraceuticals with cholesterol-lowering activity, their use might be also associated with possible risks and pitfalls, some of which are common to all nutraceuticals whereas others are related to specific nutraceuticals.

END OF QUOTE

Many advocates of alternative medicine are highly sceptical of the value of statins. Yet, it seems clear that statins exert considerably larger effects on our lipid profile than nutraceuticals. So, why not use the treatment that is best documented and most efficacious? One answer could lie in the well-known adverse effects of statins. However, can we be sure that nutraceuticals are devoid of serious side-effects? I am not sure that we can: statins have been fully investigated, and we therefore are well-informed about their risks. Nutraceuticals, by contrast, have not been monitored in such detail, and their safety profile is therefore not as well-understood.

Other advocates of alternative medicine argue that cholesterol (I use the term simplistically without differentiating between the ‘good and bad’ cholesterol) has been hyped by the pharmaceutical industry and is, in truth, not nearly as important a risk factor as we have been led to believe. This line of thought would consequently deny the need to lower elevated cholesterol levels and therefore negate the need for cholesterol-lowering treatments. This stance may be popular, particularly in the realm of alternative medicine, but, to the best of my knowledge, it is erroneous.

Obviously, the first line treatment for people with pathological lipid profiles is the adoption of different life-styles, particularly in terms of nutrition. This may well incorporate some of the nutraceuticals mentioned above. If that strategy is unsuccessful in normalizing our blood lipids – and it often is – we should consider the more effective conventional medications; and that unquestionably includes statins.

I do not expect that everyone reading these lines will agree with me, yet, after studying the evidence, this is my honest conclusion – and NO, I am not paid or otherwise rewarded by the pharmaceutical industry or anyone else!

 

First she promoted vaginal steam baths and now Gwyneth Paltrow claims that putting a ball of jade (which you can order from her online-business, if you happen to have the cash) in their vaginas is good for women.

Yes, I kid you not; this is what she states on her website:

The strictly guarded secret of Chinese royalty in antiquity—queens and concubines used them to stay in shape for emperors—jade eggs harness the power of energy work, crystal healing, and a Kegel-like physical practice. Fans say regular use increases chi, orgasms, vaginal muscle tone, hormonal balance, and feminine energy in general. Shiva Rose has been practicing with them for about seven years, and raves about the results; we tried them, too, and were so convinced we put them into the goop shop. Jade eggs’ power to cleanse and clear make them ideal for detox…

But if you think that Gwyneth is somehow fixated on her feminine parts, you are probably mistaken. She is much more versatile than that and seems to employ her vagina merely for drumming up publicity for her business. If you browse her site, you find no end of baffling, vagina-unrelated wonders and purchasable products from the world of alternative medicine.

Here are just two further examples.

Flower  remedies

A flower essence is a bioenergetic preparation. Through the use of sunlight and water, we are able to capture the energy of a flower and use it for healing purposes: A freshly harvested flower is placed on the surface of water for a specific length of time and exposed to sunlight, resulting in the vibrational imprint of the flower in water. The flower essence is then used as an energetic remedy, with each flower having its own range of unique therapeutic benefits.

Vibrational imprint?

Unique therapeutic benefit?

Pull the other one! The truth about (Bach) flower remedies is much simpler: they are expensive placebos.

A method for getting rid of the parasites we allegedly all suffer from

…an eight-day, mono-diet goat-milk cleanse—accompanied by a specific vermifuge made of anti-parasitic herbs—is the most successful treatment. Parasites primarily live in the mucus lining of the gut system, where they feed on nutrients before they enter the body. Think of the goat milk as bait—parasites come out of the gut lining to drink the milk, which they love, but they also consume the vermifuge, which will eventually eradicate them. On top of being highly effective, this method is a much more gentle medicine than bombarding them—and your body—with a harsh drug.

Are they for real?

This is pure and potentially very dangerous, unethical nonsense!

Oh sorry – I forgot: we now must call it differently now: we are obviously dealing with Gwyeneth’s ‘alternative facts’.

Yes, the festive season is upon us and therefore it is high time to discuss detox (yet again). As many of us are filling their fridges to the brim, most of us prepare for some serious over-indulgence. Following alt med logic, this must prompt some counter-measures, called detox.

The range of treatments advocated by detox-fans is weird and wide (see also below):

  • various alternative diets,
  • herbal, vitamins, minerals and other ‘natural’ supplements,
  • various forms of chelation therapy,
  • electromagnetic devices,
  • colonic irrigation and enemas,
  • various forms of skin bruising,
  • cupping,
  • sauna and other means of inducing extensive sweating,
  • homeopathy,
  • ear candles,
  • foot-baths,
  • etc., etc.

I suppose it was to be expected that detox often goes with other crazy beliefs. This website, for instance, shows that it is even associated with anti-vaxx:

START OF QUOTE

Whether you believe vaccines to be harmful or not, one has to admit that all the ingredients added to vaccines cannot be good for anyone, especially children.

As David Wolfe has discussed, vaccines contain the following: sucrose, fructose, dextrose, potassium phosphate, aluminum potassium sulfate, peptone, bovine extract, formaldehyde, FD&C Yellow #6, aluminum lake dye, fetal bovine serum, sodium bicarbonate, monosodium glutamate, aluminum hydroxide, benzethonium chloride, lactose thimerosal, ammonium sulfate, formaldehyde, glutaraldehyde, bovine extract), calf serum, aluminum phosphate, aluminum hydroxyphosphate sulfate, and ethanol.

That is a long scary list and many of these things will not leave the body naturally. Thus, a gentle detox is necessary.

Detoxification Bath

Living Traditionally suggests a detoxification bath with both Zendocrine and epsom salt. Zendocrine is an essential oil mixture made up of tangerine, rosemary, geranium, juniper berry, and cilantro. Rosemary, juniper berry, and cilantro are good choices for detoxification and tangerine and geranium are purifiers.

Garlic

Garlic has been scientifically proven to treat heavy metal poisoning. Organic Lifestyle Magazine suggests consuming three cloves a day to help remove toxins.

Silica

Silica is also good for a heavy metal detox. Natural News states, “Aluminum (Al) is passed out through the urine when one supplements silica. It seems there’s little danger of taking too much, as long as adequate water is consumed and vitamin B1 and potassium levels are maintained.”

One of the best ways to get silica in your system is with the horsetail herb, rye, barley, oats, wheat, and alfalfa sprouts nuts.

Chlorella

Chlorella is one of the best detoxifying substances available. According to Dr. Mercola, “Chlorella is uniquely designed to not bind to the minerals your body naturally needs to function optimally. It does not bind to beneficial minerals like calcium, magnesium, or zinc. It’s almost as if chlorella knows which metals belong in your body and which chemicals need to be removed. Supplementing with chlorella is like unleashing a tiny army inside your body to fight the battle of removing toxins from your tissues and ushering them back outside your body where they belong.”
You can take it in supplement form or add a powdered version to your smoothie.

Probiotics

Probiotics are what is needed to put good bacteria system to rights when it has been thrown off by toxins. “They can provide assistance by decreasing the number of bad bacteria while helping to restore balance between good and bad bacteria in the gut and to keep your body functioning properly.” (LiveStrong)

Some probiotic foods include: organic yogurt, kefir, sauerkraut, kombucha, and fermented vegetables.

Omega-3

Omega 3 oils are especially good for cell repair and keeping your brain healthy. This is because of their high fat content is similar to the fats that are naturally part of cell and brain systems. (Daily Mail)

A teaspoon daily should be enough or you could take a supplement.

Cilantro

According to Natural Society, cilantro is a very gentle detoxification tool. It is also effective for removing heavy metals from the brain.
For 2-3 weeks, add a teaspoon of cilantro to your food, smoothie, or just eat it up. You can also substitute with 6-7 drops of cilantro essential oil by adding it to your bath.

END OF QUOTE

Don’t you just adore the sources quoted by the author as evidence for his/her statements?

As I said, the therapies recommended for detox are diverse. Yet, they have one important feature in co<span style=”color: #668a1d;”>mmon: they are not based on anything remotely resembling good evidence. As I stressed in my article of 2012:

The common characteristics of all of these approaches are that they are unproved. Even experts who are sympathetic to alternative medicine and AD admit: ‘while there are hundreds of randomized controlled trials on drug and alcohol detox, there are no such trials of detox programs focusing on environmental toxins … at present, “detox” is certainly more of a sales pitch than a science’. The ‘studies’ of AD that have been published are of such poor methodological quality that no conclusions can be drawn from them.

While there is a total absence of sound evidence for benefit, some of these treatments have been associated with risks which depend on the nature of the treatment and can be particularly serious with diets (malnutrition), supplements (hepatoxicity), chelation (electrolyte depletion) and colonic irrigation (perforation of the colon).

Yet detox is big business’. A recent survey, for instance, suggested that 92% of US naturopaths use some form of detox. To lay people, its principles seem to make sense and, in many of us, the desire to ‘purify’ ourselves is deep rooted. Thus detox-entrepreneurs (including Prince Charles who, several years ago, launched a ‘Detox-Tincture’ via his firm Duchy Originals) are able to exploit a gullible public.

Proponents of detox are keen to point out that ‘a modern science of ‘detoxicology’ seems to be emerging’. If there is such a thing, it should address the following, fundamental questions:

  • What are the toxins and toxicants?
  • What evidence exists that they damage our health?
  • How do we quantify them?
  • How do we diagnose that a patient requires detox?
  • Which treatments are effective in eliminating which toxins?

Currently, there is insufficient evidence to answer any of these questions. Until this situation changes, I do not think a ‘science of detox’ exists at all.

This meta-analysis was performed “to ascertain the effectiveness of oral aloe vera consumption on the reduction of fasting blood glucose (FBG) and hemoglobin A1c (HbA1c).”

PubMed, CINAHL, Natural Medicines Comprehensive Database, and Natural Standard databases were searched. The searches were limited to clinical trials or observational studies conducted in humans and published in English. Studies of aloe vera’s effect on FBG, HbA1c, homeostasis model assessment-estimated insulin resistance (HOMA-IR), fasting serum insulin, fructosamine, and oral glucose tolerance test (OGTT) in prediabetic and diabetic populations were examined.

Nine studies were included in the FBG parameter (n = 283); 5 of these studies included HbA1c data (n = 89). Aloe vera decreased FBG by 46.6 mg/dL (p < 0.0001) and HbA1c by 1.05% (p = 0.004). Significant reductions of both endpoints were maintained in all subgroup analyses. Additionally, the data suggested that patients with an FBG ≥200 mg/dL may see a greater benefit. A mean FBG reduction of 109.9 mg/dL was observed in this population (p ≤ 0.0001). There was evidence of publication bias with FBG but not with HbA1c.

The authors concluded that the results of this meta-analysis support the use of oral aloe vera for significantly reducing both FBG (46.6 mg/dL) and HbA1c (1.05%) in prediabetic and diabetic patients. However, given the current overall quality and relative scarcity of data, further clinical studies that are more robust and better controlled are warranted to confirm and further explore these findings.

Oh no, the results do not support the use of aloe vera at all!!

Why?

Because this ‘meta-analysis’ is of unacceptably poor quality. Here are just some of the flaws that render it totally useless, particularly for issuing advice such as above:

  • The authors included uncontrolled observational studies which make no attempt to control for non-specific effects.
  • In several studies, the use of concomitant anti-diabetic medications was allowed; therefore it is not possible to establish cause and effect by aloe vera.
  • The search strategy was woefully inadequate; for instance non-English publications were not considered.
  • There was no assessment of the scientific rigor of the included studies; this totally invalidates the reliably of the conclusions.
  • The included studies used preparations of widely different aloe vera preparations, and there is no way of knowing the does of the active ingredients.

Diabetes is a serious condition that affects millions worldwide. If some of these patients are sufficiently gullible to follow the conclusions of this paper, they might be dead within a matter of days. This makes this article one of the most dangerous papers that I have seen in the ‘peer-reviewed’ literature of alternative medicine.

Who publishes such utter and irresponsible rubbish?

You may well ask.

The journal has been discussed on this blog  before for the junk that regularly appears in its pages, and so has its editor in chief. The authors (and the reviewers) are not known to me, but one thing is for sure: they don’t know the first thing about conducting a decent systematic review/meta-analysis.

The boom of alternative medicine in the US – and consequently in the rest of the developed world – is intimately connected with a NHI centre now called NCCIH (National Center for Complementary and Integrative Health). It was founded in the early 1990s because some politicians were bent on promoting quackery. Initially the institution had modest funding but, after more political interference, it had ample cash to pursue all sorts of activities, including sponsoring research into alternative therapies at US universities. A most interesting video summarising the history of the NCCIH can be seen here.

No other institution in the world had more funds for research into alternative medicine than the NCCIH, and it soon became the envy of alt med researchers globally. I have been invited by the NCCHI on several occasions and invariably was impressed by their apparent affluence. While we Europeans usually had to do our research on a shoe-string, our American colleagues seemed to be ‘rolling in it’.

I was often far less impressed with the research they sponsored. Not only it was invariably eye-wateringly expensive, but also its quality seemed often dismal. Sometimes, I even got the impression that research was used as a means of mainstreaming quackery for the unsuspecting American – and consequently world-wide – public.

An example of this mainstreaming is an article in JAMA published yesterday. Here is a short but telling excerpt:

Researchers led by Richard L. Nahin, PhD, MPH, lead epidemiologist at the NIH’s National Center for Complementary and Integrative Health (NCCIH), examined efficacy and safety evidence in 105 randomized controlled trials (RCTs) conducted between January 1966 and March 2016. The review—geared toward primary care physicians as part of the journal’s Symposium on Pain Medicine—focused on popular complementary approaches to common pain conditions.

Unlike a typical systematic review that assigns quality values to the studies, the investigators conducted a narrative review, in which they simply looked at the number of positive and negative trials. “If there were more positives than negatives then we generally felt the approach had some value,” Nahin explained. “If there were more negatives, we generally felt the approach had less value.” Trials that were conducted outside of the United States were excluded from the review.

Based on a “preponderance” of positive vs negative trials, complementary approaches that may offer pain relief include acupuncture and yoga for back pain; acupuncture and tai chi for osteoarthritis of the knee; massage therapy for neck pain; and relaxation techniques for severe headaches and migraine. Several other techniques had weaker evidence, according to the qualitative assessments, for specific pain conditions (see “Selected Complementary Health Approaches for Pain”). The treatments were generally safe, with no serious adverse events reported.

To me, this looks that NCCIH has now managed to persuade even the editors of JAMA to white-wash their dodgy science. The review referred to here is a paper we discussed some time ago on this blog. I then stated about it the following:

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.

I find it puzzling that the ‘lead epidemiologist at the NIH’s National Center for Complementary and Integrative Health’ would publish such dubious research. Why does he do it? If you have watched the video mentioned above, you are inclined to think that it might be because of political interference.

However, I suggest another, in a way much more damming reason or contributing factor: the NCCIH has so long indulged in such poor science that even its top people have forgotten what good science looks like. I know this is a bold hypothesis; so, let me try to support it with some data.

Several years ago, my team together with several other researches have looked at the NCCIH-sponsored research systematically according to 4 different subject areas. Here are the conclusions of our articles reporting the findings:

ACUPUNCTURE

Seven RCTs had a low risk of bias. Numerous methodological shortcomings were identified. Many NCCAM-funded RCTs of acupuncture have important limitations. These findings might improve future studies of acupuncture and could be considered in the ongoing debate regarding NCCAM-funding. [Focus on Alternative and Complementary Therapies Volume 17(1) March 2012 15–21]

HERBAL MEDICINE

This independent assessment revealed a plethora of serious concerns related to NCCAM studies of herbal medicine. [Perfusion 2011; 24: 89-102]

ENERGY MEDICINE

In conclusion, the NCCAM-funded RCTs of energy medicine are prime examples of misguided investments into research. In our opinion, NCCAM should not be funding poor-quality studies of implausible practices. The impact of any future studies of energy medicine would be negligible or even detrimental. [Focus on Alternative and Complementary Therapies Volume 16(2) June 2011 106–109 ]

CHIROPRACTIC

In conclusion, our review demonstrates that several RCTs of chiropractic have been funded by the NCCAM. It raises numerous concerns in relation to these studies; in particular, it suggests that many of these studies are seriously flawed. [https://www.ncbi.nlm.nih.gov/pubmed/21207089]

I think I can rest my case and urge you to watch the video mentioned above.

The Scotsman reported that David Tredinnick, the somewhat feeble-minded Tory MP for Bosworth, has been at it again. Apparently he said that many of his constituents are only alive today because they have been treated with alternative medicine.

Tredennick recently urged ministers to spend more NHS money on alternative therapies such as homeopathy and acupuncture to treat patients. It seems to me that, for him and other quackery promoters, evidence and science are issues beyond comprehension. Mr Tredinnick also disclosed the fact that he received acupuncture at a Chinese medical clinic just before the Commons debate on cancer strategy – a regular treatment he credits with keeping him healthy.

Tredennick told his fellow MPs: “I was talking there to practitioners about what they are able to do for cancer patients, and there is actually a very long list of types of cancer that can be treated using traditional Chinese herbal medicine.“ One, cervical cancer, two, non-Hodkins lymphoma, three, HIV, four, colon cancer, five… six, breast cancer, seven, prostate cancer. And so the list goes on. “I have in my constituency several constituents who I believe are alive today because they have used Chinese medicine.“ And the reason for that is what it does is it strengthens your system, and it strengthens the immune system, and it is very effective after cancer treatment. It deals with particular symptoms.”

This is by no means the first outburst of quackery-promotion by the Right Honourable Gentleman. I have a whole selection of quotes from him which I sometimes use for amusing my audience during public lectures. Because amusing he is; Tredennick seems to be utterly devoid of rational thought when it comes to the subject of alternative medicine, and often his statements make for comedy gold. This time, however, he might be sailing closer to the wind than he perhaps realizes: Under English law, it is an offence to claim that any treatment can cure cancer, I believe.

We all had to learn to laugh about unethical and dangerous nonsense the ‘Tredennicks of this world’ regularly claim about alternative medicine. Laughing is the only solution for coping with such idiocy, I am afrid. If we don’t laugh, we have to consider taking it seriously – and this is a truly frightening prospect, particularly considering that this guy actually sits in parliament and has the power to influence our lives.

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