Issue by Amanda W: What nutritional vitamins can I take to assist avert hair decline? I know it it regular to get rid of but I have been loosing chunks of hair in the shower and when I brush. Is there any vitamins that can aid me with this?? Best response: Reply by CCNdecrease in iron (Ferris) can cause hair decline,so do blood check to know if you have to acquire iron, dates has a great deal of iron Give your solution to this question below!