After reviewing 690 papers, doctors at the University of Edinburgh, UK, report that treatment of gum disease in type 2 diabetes (not type 1) can lower blood sugar levels and HBA1C, a test for cell damage (Cochrane Database of Systematic Reviews, May 2010). Patients with gum infections are at high risk for developing Type 2 diabetes (Journal of Public Health Dentistry.
Bleeding gums are usually caused by infections. Chewing drives bacterial endotoxins from the gums into the bloodstream (Journal of Periodontolology, January 2002). Your body responds to this invasion of bacteria with inflammation: producing huge amounts of cells and proteins to kill the germs, but they also block insulin receptors to raise blood sugar levels. Adults who brush their teeth less than once a day have increased risk for gum disease, a 70 percent increased risk for heart disease, and higher CRP and fibrinogen blood tests signifying inflammation (British Medica Journal, May 2010).
People with bleeding gums should seek treatment because they are at increased risk for heart attacks, strokes and diabetes.
Sometimes treatment is just a short course of antibiotics, or you may need extensive dental repair. For more information and journal references see http://www.drmirkin.com/heart/8333.html