Fashionable superfoods and supplements do not prevent cancer but instead may cause it, according to a scientist.
James Watson, who helped discover the structure of DNA, said that the cure for many cancers will remain elusive unless scientists rethink the role of antioxidants, which include vitamin pills and food such as blueberries and broccoli, the Daily Mail reported.
It is widely believed that they boost health and fight cancer by mopping up oxygen molecules called free radicals.
But Dr Watson argues that these may be key to preventing and treating cancer – and depleting the body of them may be counter-productive.
Free radicals not only help keep diseased cells under control, they are also pivotal in making many cancer drugs, as well as radiotherapy, effective, he said.