One of the major causes of tooth decay is gingivitis. Gums can be irritated by the combination of plaque and tartar causing gum infection to occur. It is due to bad oral bacteria that get gums terribly damaged and toxin bacteria causes the gums to become swollen and tender, the reason why bleeding gums occur. Gum infection comes in different levels and they vary from mild to moderate and severe. Almost anyone can be affected by this problem. Gum disease is found to develop when a person is experiencing a hormonal change like puberty and menopause. This may also depend on how well you take good care of your teeth and gums. Dry mouth and weak can increase the risk for gum disease. To avoid face off with gum disease, what would always be of great help is proper oral hygiene and regular dental cleanings.