In another study done at the Massachusetts Institute of Technology, scientists Zz Snore Review  honed in on specific measurements of tryptophan vs. tyrosine in the brain, based on whether carbohydrates or proteins were eaten at breakfast. Blood samples were collected after the meals, and the researchers concluded that a carbohydrate-rich diet raises tryptophan levels, while high-protein foods depress it. (Amer. J. of Clinical Nutrition, Jan 2003, Vol. 77, No. 1).For those who need to stay alert and sharp during the day, high protein, medium-carbohydrate meals are best eaten for breakfast and lunch. For dinner and bedtime snacks, eat a meal or snack that is high in healthy carbohydrates, with a small amount of protein that contains just enough tryptophan to relax the brain.

According to William Sears, M.D., "The best bedtime snack is one that has both complex carbohydrates and protein, and perhaps some calcium. Calcium helps the brain use the tryptophan to manufacture melatonin. This explains why dairy products, which contain both tryptophan and calcium, are one of the top sleep-inducing foods."Dr. Sears recommends that foods high in carbohydrates and calcium, and medium-to-low in protein, make the most ideal sleep-inducing bedtime snacks. Some examples are whole-grain cereal with milk, hazelnuts and tofu, oatmeal and raisin cookies with a glass of soy or regular milk, or a peanut butter or almond butter sandwich with ground sesame seeds.Sesame seeds are rich in tryptophan. Other foods that are high in tryptophan, which can be combined with healthy carbohydrates to become natural sleep remedies, are whole grains, lentils, chickpeas, beans, eggs, sunflower seeds, and miso. As always, it's best to stay away from caffeine, sodas and nicotine in the evening.

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