(Raw) cashew nuts are very high in tryptophan.
– Five foods that can treat insomnia and improve sleep (Natural News, May 17, 2014):
According to the Stanford Center for Sleep Sciences and Medicine, nearly 1 in 10 adults in the United States suffers from insomnia. Although most of these people suffer from short-term insomnia, many of them also suffer from chronic insomnia (i.e., difficulty falling or staying asleep for more than six months). Such sleep deprivation can significantly decrease the quality of one’s life.
While stress related to work and family remains the number one cause of insomnia, eating the wrong foods — such as those rich in sugar, caffeine, gluten or polyunsaturated fat — can also contribute to insomnia. Therefore, improving one’s diet is an important first step toward ending insomnia, especially if one favors foods that are known to improve sleep.