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.
Low moisture content in the skin causes dryness of nails, hands and cuticle. This can be brought about by use of hash products while washing, manual works and harsh environmental condition. Other that nail ridges, lack of moisture also causes cracked brittle nails, discolored nail beds and split cuticle.