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.
It makes it impossible to grow them out and your nail polish always chips faster. It turns out the condition has a name: onychoschisis, which is the splitting of the nails at the end. Dermatologist Heidi Waldorf tells Fashionista it's mostly a condition that arises as we age, when our nails stop growing uniformly. The good news is that there are steps we can take to stop it from happening.