Is there a vitamin deficiency that causes hair loss?

My doctors have run labs and everything looks alright, but my hair is falling out. It comes and goes so its not like permanent hair loss. I have been taking a daily vitamin with no relief. Any advice or suggestions are appreciated. Thanks. Is there a vitamin deficiency that causes hair loss?
it can be caused by a lack of protein in the diet.Is there a vitamin deficiency that causes hair loss?
It's most likely that it's a lack of Vitamin B^ in your body that's causing the problem - most cases of hair loss are because of this.



There are many different treatments that are meant to ';cure'; your condition by providing your body with the nutrients it needs.



';Provillus'; is one of the market leaders. You can see a report about it here: http://www.regrowreport.com/provillus-re/a>