Walter Willett quotes:

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

Even the relatively small amount of trans fats are likely to be causing around 7,000 premature deaths from heart disease per year.

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.

We see clear evidence repeated in many studies that higher intake of trans fats is associated with higher risk of heart disease, and with many other conditions, such as diabetes and infertility.

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

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

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.

Trans fats really are a metabolic poison.

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.