There is no evidence to prove that Gerson therapy works as a cure for cancer. We need more research to compare it with accepted and proven treatments within properly organised clinical trials.
A review in the USA by the National Cancer Institute in 2010 found no evidence that it helped people with cancer.
A 2007 study of 6 patients in the UK found that this type of therapy seemed to help people feel better emotionally and reduce their need for painkillers. But this number of patients is very small so these findings are not reliable.
It is difficult to be sure if there is any benefit from using Gerson therapy from the research that has been done so far.
This is because:
- record keeping during studies has been quite poor
- it is a complex therapy that can go on over months or years
- we can’t know what other factors might or might not affect the outcome during this time, including the environment or other treatments and diets
- some promoters give only anecdotal evidence, meaning that they use an example of an occasional person getting better as evidence
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