A Closer Look at what Causes Swollen, Bleeding Gums
- Bacteria—the bacteria that cause gum disease release toxic substances. This causes the soft tissue to become infected and increasingly inflamed
- Injury to the Soft Tissue—brushing too aggressively or using a hard-bristled brush can irritate the delicate tissue. Burns from hot food and drinks can also injure the gums
- Pregnancy and Birth Control—puberty, pregnancy, and menstruation, as well as oral birth control, cause a rise in certain hormones. This leads to increased blood flow to the gums, which can make them swell and bleed more easily