Is their any supplements good for cancer prevention?

There is no pure/unique dietary supplement that is proven to prevent Cancer100 % . However there are several Lifestyle changes which are proven to reduce the cancer risk by 40% to 50%. Here is the list that you can follow: Healthy Diet (low in animal fats including Milk) and high in Fruits and vegetables); Avoid Tobacco use and reduced or no Alcohol use, Daily Exercise to maintain a healthy weight

None in particular. You can reduce your risk of cancer by adopting healthy habits: Eat a mostly vegetarian diet, avoid alcohol, tobacco and street drugs, avoid excessive exposure to sun, maintain healthy weight, get HPV vaccine, exercise 30 minutes each day, drink enough water so your urine is mostly colorless. Wish you good health!