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.
White nails. If most of the nail has turned white and it isn't because it has become detached from the nail bed, it's likely to be either a fungal nail infection or a sign of decreased blood supply to the nail bed, which causes something known as Terry's nails.