5.Cause: Cancer Treatment
Brittle nails can be a side effect of some cancer treatments like chemotherapy. Dry skin and nails are common. They may become thin, break easily, and grow more slowly than normal.
6.Cause: Not Enough Nutrients
Rarely, brittle nails can mean you’re not getting the vitamins and minerals your body needs. For example, low calcium levels (hypocalcemia) can cause scaly skin, dry hair, and brittle nails along with muscle cramps.
