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.
Besides no moons on fingernails, here are more nail conditions that may indicate health problems. 1. Brittle or Crumbly Nails. Brittle or crumbly nails can be caused by aging or long exposure to detergents and nail polish. However, sometimes it can be an indicator of fungal infection, thyroid disease, psoriasis, and lichen planus.