Struggling with sleep? Stress, poor diet, blue light, or an offbeat schedule could be to blame. But nature offers help: pistachios are packed with sleep-promoting nutrients like melatonin, B6, and magnesium. In fact, they're one of the most melatonin-rich plant foods — making them a safe, natural alternative to supplements. Just 2.6 oz (about 4 dozen) eaten 1–2 hours before bed can support restful, restorative sleep.