7 comments on âOcean Sunfish are the most useless animal (an epic rant)â. 1  Man alive, when are humans going to realize the world wasnât made for them? 2  So what if this animal grows as nothing more than a source of food for others.
The most important hormones affecting the health of skin, hair and nails are estrogen (especially in proportion to testosterone), thyroid hormones and cortisol. Estrogen: Not surprisingly, estrogen levels affect every part of the body, including hair, skin and nails.
Photo Credit Stockbyte/Stockbyte/Getty Images. 1  Keratin is a protein that adds strength to hair, nails and the outer layer of skin. Even though it isn't found in food, eating the right foods -- those rich in protein and certain vitamins -- can boost keratin production and support hair, skin and nail growth.