According to work published in the Journal of the National Cancer Institute, supplements such as vitamins, antioxidants, retinol or garlic were proven to have no effect on the disease.
According to Reuters, Dr. Steven Thomas and associates at the University of Bristol in the U.K. conducted a review of clinical trials that focused on the effects of nutritional supplements in patients with cancer or precancerous tissue. They excluded studies used to treat complications, as well as studies that used synthetic retinoids, vitamin analogues, herbal supplements, and polysaccharide K.
The group explains, "we should not maintain the notion that nutritional interventions can be promoted because at least they will do no harm."
Yet, "encouraging a healthy diet is certainly important."
