Red meat linked to risk of earlier death
Star-Tribune
Last update: March 23, 2009 - 8:07 PM

Eating red meat increases the chances of dying prematurely, according to a large federal study offering powerful new evidence that a diet that regularly includes steaks, burgers and pork chops is hazardous to your health.

The study of more than 500,000 middle-age and elderly Americans found that those who consumed the equivalent of about a small hamburger every day were more than 30 percent more likely to die in the following 10 years, mostly from heart disease and cancer. Processed meats also increased the risk.

The new study is the first large examination of the relationship between eating meat and overall mortality.

In contrast, routine consumption of fish, chicken, turkey and other poultry decreased the risk of death slightly, the study found.

Although pork often is promoted as "white meat," it is believed to increase the risk for cancer because of its iron content, said Rashmi Sinha of the National Cancer Institute, who led the study published today in the Archives of Internal Medicine.

"This would be the Rolls-Royce of studies on this topic," said Barry Popkin, a professor of global nutrition at the University of North Carolina, who wrote an accompanying editorial.

There are many explanations for how red meat might be unhealthy: Cooking red meat generates cancer-causing compounds; red meat is also high in saturated fat, which has been associated with breast and colorectal cancer; and meat is also high in iron, which also is believed to promote cancer. People who eat red meat are more likely to have high blood pressure and cholesterol, which increases the risk of heart disease. Processed meats contain substances known as nitrosamines, which have been linked to cancer.

The American Meat Institute, a trade group, dismissed the findings, saying they were based on unreliable self-reporting by study participants.

After accounting for other variables such as smoking and physical activity, the researchers found that men who consumed the most red meat -- about a quarter-pound a day -- were 31 percent more likely to die for any reason, 22 percent more likely to die of cancer and 27 percent more likely to die of heart disease than those who ate the least meat. Women who ate the most red meat were 36 percent more likely to die for any reason, 20 percent more likely to die from cancer and 50 percent more likely to die from heart disease.