There are many causes for hair loss, some of them are:
1. Some medicines cause hair loss like blood thinners (also called anticoagulants), medicines used for gout,
medicines used in chemotherapy to treat cancer, vitamin A (if too much is taken), birth control pills, and
antidepressants
2. stressful life
3. deficient diet in essential nutrients
4. hormonal imbalance like overactive or under active thyroid
5. most important of all hereditary factor
6. scalp fungal infection
7. after a long illness or surgery
The necessary step to prevent hair loss is to take a good balanced diet, multivitamin supplements, regular
exercise. Getting blood hormone levels tested to look for any thyroid abnormality should also be considered.