In a separate study published by American Journal of Preventive Medicine, the loss of tooth in adults was directly associated with heart disease. Among the participants who had all their teeth intact, 4.7% suffered from heart disease. Participants who were missing 1-5 teeth faced a 21% increase in heart disease whereas those missing 6-31 teeth faced a 60% chance of heart disease. 81% of those with no natural teeth suffered from heart disease.

The results from this report are similar to other studies that link tooth loss and periodontal disease to a high risk of atherosclerosis (hardening of arteries) and heart disease. These results are also influenced by the respondents’ lifestyle and genetic factors such as education, smoking status, marital status, alcohol consumption, gender, ethnicity, race, body mass index, diabetes, high blood pressure and cholesterol levels.

The findings of this study are still inconclusive and the relationship between gum health, tooth loss and heart attacks is not yet clear. Some claim that both periodontal and heart disease have the same risk factors. There are others who claim that the bacteria that cause plaque or periodontal diseases get into the blood, hence the association between heart disease and tooth loss.

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https://www.deltadentalins.com/oral_health/heartmouthdw.html
http://www.webmd.com/oral-health/news/20130307/tooth-loss-associated-with-higher-risk-for-heart-disease