WASHINGTON—Confirming years of speculation, a new study from the U.S. Department of Agriculture's National Animal Health Monitoring System has found that red meat significantly increases the risk of premature death in cows. "Our research suggests that by having red meat, a cow's life can be shortened by as many as 10 years, sometimes more," Agriculture Secretary Tom Vilsack said in an interview with CNN Tuesday. "Unfortunately, in some cases, even just a single daily serving of red meat can hurt a cow's chances of surviving past the earliest stage of life." On a more positive note, researchers found that other high-protein foods like milk, cheese, and butter only decrease a cow's life by 7 to 9 years.