Gut bacteria may convert a nutrient found in red meat into a compound that can damage the heartThe link between red meat and poor heart health has traditionally been blamed on cholesterol, but new evidence suggests this isn't the whole story. US researchers found that carnitine, a nutrient found in red meat, is converted into a metabolite that promotes cardiovascular disease by gut bacteria. This may mean that the popular practice of taking carnitine supplements to build muscle is unwise.‘The cholesterol and saturated fat content of red meat is not sufficient to account for increased cardiac risk,’ says lead author...