Hold the line, please
adalat ppt But tryptophan competes with all of the body's other amino acids to enter the brain, through a strict gatekeeper known as the blood-brain barrier. It's the heaps of carbohydrates ??? the stuffing, potatoes and yams smothered in marshmallows ??? that are the true problem, according to medical experts.??Consuming carbs triggers the release of insulin, which removes most amino acids from the blood, but not tryptophan ??? that dearth of competitors allows tryptophan to enter the brain and form serotonin and, ultimately, melatonin. (Melatonin can also be produced in the intestine, and a small amount of that may ultimately leak out into the bloodstream and end up in the brain, too.)