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).
Weak and brittle nails that can easily become cracked or chipped are a common problem affecting both men and women. There are three main factors that cause brittle nails â aging, long-term use of nail polish and frequent exposure to water. Brittle nails can also be associated with some diseases, such as hyperthyroidism, hypothyroidism, lung conditions, psoriasis, lichen planus, alopecia areata, eczema, anemia, fungal infection, and endocrine disorders.