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).
Other that nail ridges, lack of moisture also causes cracked brittle nails, discolored nail beds and split cuticle. Underlying medical conditions can cause nail problems such as white spots on nails, ridges, cracking and brittle nails. Example of such diseases is psoriasis.