Anti-oxidants
We don't like to change our diet. We rather believe that supplements or vegetables will provide us with substances that protect us against cancer. Unfortunately, such substances do not, and never will exist.

Many 'experts' say that anti-oxidants are 'good', preventing cancer, and oxidative radicals are 'bad'. But that is nonsense. The only reason why they do so, is because you can make lots of money by selling antioxidants to people who are afraid of getting cancer.
Stating that radicals are bad substances is criminal and misleading ; to obtain energy from sugars for example, these sugars first have to be oxidized, requiring oxidative radicals. Oxygen radicals also kill bacteria and clean up drug-residues, and are needed to compose hormones, to keep the veins flexible and to regulate blood pressure. Without oxygen radicals, you can't live !!!
However, if external radicals enter the body, these radicals can damage enzymes, organs or cell-DNA/RNA, and cause cancer.
By nature, our body uses antioxidants to prevent damage by natural radicals. But though antioxidants can actively bind to radicals, they can never ever disarm all dangerous exogenous radicals.