Actually there are a few things you can do to thicken the hair and make it grow, not so much stop it from receding.
Nioxin is a hair regrowth shampoo/conditioning system that helps older people when their hair falls out.
Since your body is lacking nutrients, it's an automatic stage for the hair to lose it's strength and begin to recede.
With thick hair you can style it, give an illusion. There are also "Biotin" tablets, which strengthens hair and nails.
Good luck c: