Gums bleed when they are irritated and inflamed and bleeding gums is the most common sign of gum disease.

Some other reasons why your gums could be bleeding are:

1. Brushing too vigorously
2. Using a toothbrush that has hard bristles.
3. Dentures or retainers which are not fitted properly.
4. Bacterial infection in the tooth or gums.
5. Hereditary.
6. Use of blood-thinning medicines
7. Smoking irritates gums and leads to bleeding gums.
8. Sometimes pregnancy could also be the cause of bleeding gums.

Do not neglect bleeding gums problems, contact your dental professional at the earliest to avoid the development of advanced forms of gum disease. Treat bleeding gums immediately.