I am female, age 63, I cannot get my fingernails to grow - they split & break. I wear gloves & do not expose my nails to chemicals. I have had strong nails in the past and I am in good health. What could cause this? Is there a remedy? Thank you.

Take a few grams of spirulina (blue-green algae) per day. I noticed it made my fingernails very strong. It is also very good for you. It has a high concentration of gamma linoleic acid.