US. researchers studied a large sample of 11,576 adults over six years. The researchers found that the average intake of participants was 2.5 times the recommended intake. After controlling for as many variables as possible, such as weight, race and gender, they found that diets high in these amino acids, especially cysteine and methionine, were associated with high cholesterol, insulin resistance, and high blood sugar, all of which contribute to metabolic disease diseases such as heart disease, stroke, diabetes and non-alcoholic fatty liver disease.
Because animal products often contain higher levels of these amino acids, the researchers suggest that a plant-based diet may be the best way to keep your intake of sulfur amino acids close to recommended levels.
This suggests that reducing the intake of these amino acids may partly explain some of the health benefits observed with a plant-based diet. Therefore, replacing animal-based protein with plant-based protein may be a healthy move.
Research shows that nutrition is a major component in reducing the risk of chronic disease and premature death. Sulfur amino acids are more prevalent in meat than in vegetables, so switching to plant-based protein sources, such as whole grains, soy, lentils, nuts, and seeds, can reduce your likelihood of developing heart disease or diabetes in the future.