Tryptophan is one of the 9 so-called essential amino acids. It plays a central role in the prevention of stress and mood disorders because it is the immediate precursor of serotonin, as well as vitamin B3. It is therefore recognized for its antidepressant action. It also facilitates sleep by increasing the synthesis of melatonin. If you find tryptophan in different sources, the problem is more to combine it with the right ones. nutrients, carbohydrates in this case, so that it is captured in priority over other amino acids.
Sources of tryptophan: milk, dairy products, eggs, meat, pineapple, bananas, carrots, celery, cauliflower, cereals, nuts, figs, dates, tofu.
Namely: a serotonin deficiency can be observed in a person suffering from constipation chronic. The tryptophan is then metabolized by the intestinal flora into a substance (indican), and will not be used for the manufacture of serotonin.