Pistachio Nut, Is It Organic : Organic

The pistachio, a member of the cashew family, is a small tree originating from Central Asia and the Middle East. The tree produces seeds that are widely consumed as food. Pistacia vera often is confused with other species in the genus Pistacia that are also known as pistachio.

Pistachios hit the sleep-inducing jackpot, packing in protein, vitamin B6, and magnesium, all of which contribute to better sleep. Refrain from a shell-cracking frenzy, though. "Don't exceed a 1-ounce portion of nuts," London warns. "Anything too high in calories can have the reverse effect of keeping you awake