Pistachios: One ounce of pistachios contain about 25 percent of your daily value of vitamin B6, a vitamin necessary for the production of serotonin and melatonin, hormones that help us get better sleep. Get your fill of B6 by consuming pistachios, along with a variety of foods containing vitamin B6 such as animal proteins like fish, chicken, turkey, pork, eggs and milk, along with whole grains and soy products such as edamame or tofu.
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