It’s always tempting to believe stories of people who claim to have had positive cancer outcomes by following a particular diet regime. Sadly, such stories aren’t scientific proof that a particular diet or type of food can actually cure cancer. We know that a diet high in fruits and vegetables (including herbs and spices, such as ginger, chilli and garlic) offers some protection against cancer. But there’s no one, two or even three foods that can cure cancer. When it comes to foods such as habenero chillies, garlic, ginger and cod liver, what we do know is that they contain plant chemicals that have the potential to be active in the body, and which have interesting effects in some laboratory studies. But although they’re widely eaten, what is known about them and their possible effects has only been studied in test tubes on cancer cells and in animal models. There are some promising results and interesting hypotheses, which are deserving of further scientific study. However, at this point we don’t know enough about their possible actions in people or their safety in large doses to be close to saying they are a potential treatment for cancer.