It is estimated that 30 million women experience thinning hair. Of these women, 70% have female pattern hair loss. Most women who lose their hair to baldness are perfectly healthy.
Vitamins might make your hair stronger and healthier but they will not help regrow hair. But the only over-the-counter product proven to regrow hair is Minoxidil.
Studies dating back to the 1940s revealed that hair loss is connected to genes and androgens. Since the bald patterns resembled where hats would lay it seemed the logical conclusion that doctors would attribute hair loss to hats!