Nails and hair are both made from keratin and any changes in your body’s keratin production will impact their health. For example, healthy hair and nails should have a certain amount of flexibility. Dehydration or malnutrition can cause your nails and hair to become brittle and easily broken. Their growth rate could also be affected.
Causes for brittle nails and slow-growing hair vary but could include;
- Diseases such as hypothyroidism
- Nutritional deficiency
- Medication and health
- Nail enhancements