22 SEPTEMBER 1923, Page 3

On Wednesday the Times published a letter from Sir Frederick

Treves emphasizing the importance of the paper on " Cancer and Diet " which Dr. Monckton Copeman read before the British Association last week. Dr. Copeman's main point was that by restricting the consumption of animal fats, containing vitamine A, you can modify the progress of cancer. " A hint of this nature from so eminent an authority," writes Sir Frederick Treves, " must of necessity be fbllowed up." Dr. Robert Bell, who is conducting cancer research at Battersea, has for a long time explicitly stated that cancer is a. preventable disease—that it is chiefly a matter of diet. Hitherto we believe Dr. Bell has been subjected to professional disapproval, perhaps because he is believed to have exaggerated. This is a matter on which we cannot venture to express an opinion, but at least it seems that when such authorities as Dr. Copeman and Sir Frederick Treves arc in agreement with Dr. Bell's general thesis, a very obvious field for careful exploration is revealed.