Since carotenoids are tightly-bound in proteins in our foods, our body only typically absorbs about 20% - 40% of what is consumed. However, as the amount of carotenoid eaten increases, this proportion further decreases/ drops-- to 10% or less.
Carotenoids are plant pigments which are responsible for the bright red, yellow, and orange colors of fruits and vegetables, such as carrots, pumpkins, squash, and mangoes. Certain types of carotenoids form Vitamin A, which is essential to health. Moreover, carotenoids exhibit antioxidant activity by protecting cells from free-radical damage.