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.
Conditions we more often associate with skin, like psoriasis, can also cause brittle nails. Some companies sell vitamins that are meant to help strengthen nails, most notably using a b-complex vitamin called biotin, but there is very little evidence to suggest that these vitamins actually improve brittle nails.
Obsessive-compulsive disorder can show up in the nails through persistent nail-biting or picking, Fox says. Even common disorders like thyroid disease can cause abnormalities in the nail beds, producing dry, brittle nails that crack and split easily. He lists the following 10 examples of nail changes that could indicate a serious medical condition.