Allthough it is difficult to point to an exact cause of this problem very commonly seen nowadays, it is very commonly also found to be hereditary. Among other common causes are again pollution, use of chemicals, improper diet & rest. Stress
seems to be a very important factor for it is commonly seen in people with high profile jobs, students as also in smokers.
Treatment: Besides avoidance of causative factors homeopathic
medicines / remedies for the treatment of premature greying of hair are- Phosphoric acid, Sulphuric acid, Lycopodium, Phosphorus & many others.