I found a great article on Huffington Post about female hair loss. Natasha Turner is a Naturopathic Doctor who provides a really comprehensive overview of the causes of hair loss in women.
In addition to talking about the role of iron and B vitamins, she gives some great advice about Zinc and other minerals that can contribute to female hair loss.
Great, definitive overview for any woman looking for a more natural approach to learning what is causing their hair loss — plus options to stop it.