12 Health Benefits of Pistachios

4. They improve nervous system function

The body relies on the nervous system for, well, everything. The nervous system is made up of many nerves all over the body which transmits signals to the brain in reaction to stimuli such as light, sound, or touch. For a properly functioning nervous system, you need to consume foods with B vitamins—especially vitamin B6. Vitamin B6 plays a major role in the synthesis of amino acids that the body requires to communicate through the nervous system. Pistachios are an excellent source of vitamin B6. In just one ounce, you receive 18% of your RDI of vitamin B6.