The health factor

A plant-based diet, which emphasizes fruits, vegetables, grains, beans, legumes and nuts, is rich in fiber, vitamins and other nutrients. And people who don't eat meat — vegetarians — generally eat fewer calories and less fat, weigh less, and have a lower risk of heart disease than nonvegetarians do.

Even reducing meat intake has a protective effect. Research shows that people who eat red meat are at an increased risk of death from heart disease, stroke or diabetes. Processed meats also increase the risk of death from these diseases. And what you don't eat can also harm your health. Diets low in nuts, seeds, seafood, fruits and vegetables also increase the risk of death.