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).
The body requires the following vital vitamins for nails; otherwise it could lead to brittle nails: 1  Vitamin A deficiency: No half-moons or ridged nails, brittle, peeling or splitting nails.  Vitamin B-12 deficiency: Nails curve down past your fingertips, flat nails, dark, spoon shaped nails.