1 Calcium and vitamin D intake. 2  A diet low in calcium and vitamin D makes you more prone to bone loss. 3  Medication use. 4  Some medicines increase the risk of osteoporosis. 5  Activity level. 6  Lack of exercise or long-term bed rest can cause weak bones. 7  Smoking.
Signs and Symptoms. 1  Nail splitting affects the fingernails and the toenails. The condition may appear as a single horizontal split between layers of the nail plate at the growing end or as multiple splits and loosening of the growing edge of the nail plate.
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.