A number of things can cause or worsen gum disease: Smoking, stress, medications, poor nutrition, obesity, heart disease, and family history are some. Three out of four people in the U.S. have gum disease, but only about 3% get treatment. Because it's painless, you may not know you have it.
If your gums bleed easily or are red, swollen, or tender, see your dentist. Treat gum disease early before it worsens and you risk losing teeth.