Basic lifestyle changes, such as managing stress, can prevent memory loss. Learn about memory-protecting lifestyle changes at HowStuffWorks.com.
Vitamin B6. Again, it's women who are at greatest risk for not meeting their needs for this vitamin. The average intake is just over 50 percent of the DRI. Women on birth control pills seem to need more than average. Some men and seniors of both sexes may fall short, too. If you ...
But the serotonin molecule can't cross the blood-brain barrier. That's why so much serotonin is produced in the gut (it can't get any from the brain), and it's anatomically separated from the serotonin produced in the brain. Pro tip: Increase your intake of fermented foods and take a...
Biotin acts as a coenzyme in the metabolism of fats and carbohydrates, the breakdown of proteins to urea, and the conversion of amino acids from protein into blood sugar for energy. A.L. Canterbury / Getty Images You may not have heard much about this B vitamin, but that's easy to un...