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.
Biotin is needed to keep your skin, fingernails and hair healthy and a deficiency is characterized by thinning and splitting of your hair. Biotin deficiency can also cause poor nail growth and brittle nails. You can get biotin supplements at your local health food store.