Physical education is a unique aspect of education in that it provides the only. instruction for students in the development and maintenance of positive attitudes, essential knowledge and physical skills. The contribution of physical education is to.
1 Kidney disease can cause a build-up of nitrogen waste products in the blood, which can damage nails. 2  Liver disease can damage nails.  Thyroid diseases such as hyperthyroidism or hypothyroidism may cause brittle nails or splitting of the nail bed from the nail plate (onycholysis).
Some diseases are also associated with changes in the nails, which can include brittleness. Thin and brittle nails can be a sign of hypothyroidism, for example. The term onychoschizia refers to splitting of the fingernails as well as brittle or soft nails. Taking biotin (a vitamin) supplements can help in some cases of brittle nails, and application of moisturizers after soaking in water can also be of benefit. Medically Reviewed by a Doctor on 3/30/2015.