Vitamin B6 is a vital nutrient that keeps the body functioning in a healthy manner. It helps the brain, digestive system, immune system, cardiovascular system and nervous system, according to American Dietetic Association spokesperson Dee Sandquist, reports Everyday Health.
Vitamin B6 is a significant part of the production of serotonin and norepinephrine and the development of myelin, says Mayo Clinic. Myelin is a layer of protein that develops around nerve cells. Those who suffer from vitamin deficiency may experience health issues with the mucous membranes, skin and circulation. Some main food sources of vitamin B6 are spinach, potatoes, milk, cheese, eggs, flour and legumes.