With breast cancer, nothing is straightforward. It makes sense for most people to make their dietary decisions based on what it does for heart disease. That's where the data are most strong.

A diet rich in fruits and vegetables plays a role in reducing the risk of all the major causes of illness and death

If you step back and look at the data, the optimum amount of red meat you eat should be zero.

The evidence that folic acid reduces the risk of heart disease is pretty strong. [...] And fruits and vegetables are a major source of folic acid.

There's a lot of evidence that fruits and vegetables are beneficial for reducing the risk of stroke.

With breast cancer, nothing is straightforward. It makes sense for most people to make their dietary decisions based on what it does for heart disease. That's where the data are most strong.

No single food will make or break good health. But the kinds of food you choose day in and day out have a major impact.