Results show that participants with severe, untreated sleep apnea had a significant reduction in white matter fiber integrity in multiple brain areas. This brain damage was accompanied by impairments to cognition, mood and daytime alertness.
An iron deficiency can cause the nail bed to be thin and concave and have raised ridges. While most of Fox's patients don't come in to report nail problems, he routinely checks patients to make sure they have healthy fingernails. The nails offer many little clues to what's going on inside you.
Here too a decreased curve index was observed in the finger subject to greater trauma [10]. Increased forces on a nail bed also likely change the rate of nail growth. The rate of growth on the nails of an individualâs nondominant hand is slower than the rate on the dominant hand, which is subject to more trauma [6]. Similarly, it has been noted that onchycophagia, a habit commonly known as nail biting and observed even in chimpanzees, increases the rate of nail growth [1,11].