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Eating for Longevity

Foods to keep your heart, brain, and bones healthy.

By Peter Jaret
WebMD Feature

Reviewed by Louise Chang, MD

Is there such a thing as a longevity diet? Increasingly, studies suggest the answer is yes.

Around the world, certain groups of people enjoy exceptionally long lives. Consider the lucky people of Okinawa: These Pacific Islanders have an average life expectancy of more than 81 years, compared to 78 in the United States and a worldwide average of just 67. Closer to home, members of the Seventh Day Adventists, who typically eat vegetarian diets, outlive their neighbors by four to seven years on average.

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The residents of the San Blas islands, meanwhile, off the coast of Panama, very rarely suffer from high blood pressure and heart disease. Indeed, research shows that their rate of heart disease is only nine per 100,000 people, compared to 83 per 100,000 among nearby mainland Panamanians.

What makes these groups so fortunate? A growing body of findings suggests that diet is one of the important contributors to longevity and a healthy life. WebMD examined the research and talked to the experts. Here’s what’s on the menu of people who enjoy long and healthy lives.

Foods for a Healthy Heart

Most of us know to go easy on saturated fat, the kind found in meat and high-fat dairy products. Saturated fats have been shown to raise blood cholesterol levels into the danger zone. Just as important is what you should be eating. For heart health and longevity, you should eat:

Plenty of fruits and vegetables: Plant-based foods are abundant in fiber and many vitamins and minerals. Packed with nutrients, they’re also relatively low in calories. Studies consistently show that diets plentiful in fruits and vegetables help people maintain a healthy weight and protect against cardiovascular disease.

Whole grains: Like fruits and vegetables, whole grains pack a lot of nutrition into a low-calorie package. Grains like oats and barley are also rich in a long list of disease-fighting compounds.

In findings from the Multi-Ethnic Study of Atherosclerosis published in 2009, researchers at the University of Texas Health Sciences Center in Houston reported that participants whose diets included plenty of whole grains and fruit cut their heart disease risk by almost half compared to those whose diets favored meat and fatty foods. Findings from more than 161,000 nurses enrolled in the Nurses’ Health Study also show that whole grains protect against type 2 diabetes, a disease that in turn increases the danger of heart disease.

Nuts: For too long, nuts were banished from the list of healthy foods because they’re high in fat. They are. But the fat they contain is mostly unsaturated, which protects against heart disease.

Dark chocolate: Dark chocolate? That’s right. Researchers now think that high blood pressure and heart disease are exceedingly rare among residents of the San Blas islands because they eat chocolate, and lots of it. Components in dark chocolate called polyphenols are believed to lower blood pressure and improve the flexibility of blood vessels. In a 2008 study, researchers at the University of Aquila gave volunteers with hypertension 100 grams of dark chocolate daily. After 15 days, their blood pressure readings were significantly lower and their insulin sensitivity had improved.