What could cause your gum to bleed?

Gum Disease: You could have gingivitis or gum disease with bone loss. On very rare occasions, a systemic disease or hormonal changes. Of course, poor oral hygiene and lack of professional cleanings can also cause this condition.

Regular Visit: To your dentist can maintain your oral health. 70% is proper home care. Proper diet and cutting down on sugary food and beverages will make a big difference. Balanced diet including fresh fruit and vegetables, green tea, exercise, good attitude, and proper sleep... Stress and malnutrition are also contributory factors to unhealthy tissue.

Gums / platelets: On the dental side, poor gum health. On the medical side this is usually associated with low or dysfunctioning platelets.