Doctors have been talking about the potential link for nearly two decades and with good reason. Heart disease is a serious problem around the world. So is poor oral health. 

Inflammation is also a sure sign of gum disease. Sore, swollen gums are the main symptom. There are two main types: gingivitis, which causes red, painful, tender gums, and periodontitis, which leads to infected pockets of germy pus. That's the type that raises the worry for heart problems. It allows bacteria and other toxins to spread below the gum line.

Studies show that the bacteria found in periodontal disease -- including Streptococcus sangu is, which plays a role in strokes -- spreads to the heart. "The two appear to go hand-in-hand," Merritt Says. "In the absence of gum disease, there is significantly less of these bacteria in the heart."

Brush your teeth twice daily. Also do not ignore gum problems like bleeding gums, bad smell from mouth.

Keep your gums fit and so heart fit.