There is a direct link between obesity and poor oral health. Studies have shown that people who are obese tend to have poor oral hygiene, and rotting teeth in some cases, which definitely causes bad breath. This may be due to large intakes of unhealthy candies, foods, and soft drinks.
A study showed that due to unhealthy nutritional intake and from not exercising, children and adolescents were more prone to develop periodontal disease and become obese. These bad habits affected both their dental and overall well-being. The solution to this issue is rather simple, maintain regular physical activity and eat healthier foods.