Upper Darby, PA City Data Upper Darby, PA is a city with great restaurants, attractions, history and people. There are around 38,348 people who live in Upper Darby and approximately 550,864 who live in Delaware County.
Molybdenum is a trace mineral found in foods such as milk, cheese, cereal grains, legumes, nuts, leafy vegetables, and organ meats.
1 Examples of foods high in tryptophan include: cheese, chicken, soy products, eggs, tofu, fish, milk, turkey, nuts, peanuts and peanut butter, pumpkin seeds, and sesame seeds.  To make tryptophan-laden meals more effective, make them high in complex carbohydrates.