Scientists have uncovered how aging alters tryptophan metabolism in the brain, linking a longevity protein to ...

This is a preview. Log in through your library . Abstract The tryptophan hydroxylase activity in the rat midbrain decreases after adrenalectomy and is restored by treatment with corticosterone.

Tryptophan is an essential amino acid used to make proteins. Your body does not make it, so you need to get it from your diet. Foods that contain tryptophan include animal products like chicken and ...

Tryptophan is one of nine essential amino acids that's essential to a healthy diet and is found in foods like chicken, turkey, eggs, peanuts, and dairy. Your body uses tryptophan to make melatonin and ...

A: Foods rich in tryptophan, such as eggs, cheese, salmon, tofu, nuts, and seeds, may help support natural serotonin ...