07/27/2026
Bleeding gums when you floss are usually not a sign to stop flossing—they’re often a sign your gums need more attention. Plaque buildup along the gumline can cause inflammation (gingivitis), making your gums red, swollen, and prone to bleeding. The good news is that gingivitis is usually reversible with proper brushing, flossing, and regular professional cleanings. Healthy gums don’t bleed. If yours do, it’s time to treat the cause—not avoid flossing.