Leucine is also suspected to be the only amino acid which can stimulate muscle growth, and can also help prevent the deterioration of muscle with age. High leucine foods include cheese, soybeans, beef, chicken, pork, nuts, seeds, fish, seafood, and beans. The recommended daily intake for leucine is 39mg per kilogram of body weight, or 17.7mg per pound. A person weighting 70kg (~154 pounds) should consume around 2730mg of leucine per day.