Harvard Heart Letter

How steak and eggs may increase heart attack risk

Research we’re watching New research may help explain why diets rich in animal-based foods are linked to a higher risk of heart attack. The average American diet contains about 300 milligrams per day of choline, a nutrient found in meat, eggs, and milk. Earlier research found that when gut bacteria feed on choline, they make a compound called TMA. In the liver, TMA is converted to TMAO — a compound closely tied to…

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