Zack Polanski, the Hypnotherapist in UK Politics

Zack Polanski the current Leader of the Green Party of England and Wales, previously worked as a professional “cognitive hypnotherapist”.

My own assessment of hypnotherapy states that is the use of a trance-like state (hypnosis) for therapeutic purposes. It can be traced back to ancient cultures, but more recently Anton Mesmer (1734–1815) introduced hypnotherapy into medicine. Initially Mesmer was highly successful—until a Royal Commission investigated his method of ‘animal magnetism’ and concluded its effects were entirely due to imagination. Hypnotherapy induces in many but not all individuals a state of deep relaxation that is potentially helpful in a range of conditions. Today, there are different schools of hypnotherapy, e.g. Ericksonian hypnotherapy, cognitive behavioural hypnotherapy, curative hypnotherapy. Various different healthcare professionals practise hypnotherapy, including doctors, dentists, psychologists and nurses. Hypnotherapy is used to treat many conditions or symptoms, from pain and stress to irritable bowel syndrome and drug dependency. The evidence from clinical trials is mixed. Most systematic reviews emphasise the often poor-quality of the primary studies, e.g.:

“Hypnosis reduces pain intensity and anxiety ratings in adults undergoing burn wound care. However, because of the limitations discussed, clinical recommendations are still premature.”

“Due to exploratory designs and high risk of bias, the effectiveness of hypnosis or hypnotherapy in stress reduction remains still unclear.”

“There are still only a relatively small number of studies assessing the use of hypnosis for labour and childbirth. Hypnosis may reduce the overall use of analgesia during labour, but not epidural use. No clear differences were found between women in the hypnosis group and those in the control groups for satisfaction with pain relief, sense of coping with labour or spontaneous vaginal birth. Not enough evidence currently exists regarding satisfaction with pain relief or sense of coping with labour and we would encourage any future research to prioritise the measurement of these outcomes. The evidence for the main comparison was assessed using GRADE as being of low quality for all the primary outcomes with downgrading decisions due to concerns regarding inconsistency of the evidence, limitations in design and imprecision.”

“We have not shown that hypnotherapy has a greater effect on six month quit rates than other interventions or no treatment. The effects of hypnotherapy on smoking cessation claimed by uncontrolled studies were not confirmed by analysis of randomised controlled trials.”

“Current research concerning the efficacy of hypnosis to relieve insomnia is lacking in key methodological elements”

Contrary to what is often claimed, hypnotherapy is not entirely free of adverse effects. It has been associated with the ‘false memory syndrome’ where unpleasant recollections that have never occurred are implanted into the patient’s brain. Hypnotherapy should not be used by patients who suffer from psychoses or personality disorders.

Polanski’s practice was based at a clinic on Harley Street, a London district renowned for private healthcare. His work focused on personal development, confidence building, and body-image issues. Polanski’s hypnotherapy career became a subject of public scrutiny due to a 2013 report by The Sun newspaper, in which it was claimed that during a consultation, Polanski offered to use hypnosis to facilitate breast enlargement. While Polanski later stated the piece was a “misleading” representation of his methods and intended as an experiment in internal self-image, recent investigative reporting has cast doubt on his subsequent narrative.

Although Polanski has frequently asserted that he apologized for the article “the day after” its publication in a BBC radio interview. This claim is, however, contested. In a 2013 interview with BBC Radio Humberside, Polanski reportedly discussed the technique and stated that “the evidence is growing” regarding its efficacy. Independent analysis of the clinical evidence-base for hypnotherapy fails to find good evidence regarding physical outcomes. Similarly, the evidence regarding the efficacy of hypnotherapy for personal development and confidence building is at best varied, with outcomes often depending on the specific application and individual context. My own assessment does not arrive at a positive conclusion.

Polanski has claimed he was misrepresented in the Sun article. Yet, he also wrote in a 2019 blog post that he did not believe the journalist had done a “bad job” or misrepresented him. In that same post, he noted that the coverage led to numerous inquiries from men seeking similar hypnotic treatments for other physical augmentations, all of which he stated he declined.

The “breast enlargement” claim has been frequently cited by political opponents and the media to question Polanski’s judgment and credibility. The story has resurfaced repeatedly during his political campaigns, including through confrontations from members of the public and intense scrutiny during his time as leader.

Polanski maintains that his background in hypnotherapy provides him with unique insights into mental health and communication, which he views as assets in his political role. I would add that, for many of the conditions for which it is promoted, hypnotherapy is not an evidence-based treatment.

Polanski has expressed regret for the “distraction” the story has caused his party, even as critics continue to challenge the consistency of his account regarding the original 2013 events.