A poor diet can affect the entire body all at once. Eating heavy foods that build up in the arteries will cause cardiovascular issues. Some of those same foods can also affect your oral health. Sugary snacks, for example, can damage the teeth, causing cavities and erosion.
Unhealthy food can damage the heart and the teeth at the same time, creating a correlation between oral health and heart health. This is another example, of course, of correlation and not causation. When it comes to diet-related issues, the teeth and the heart are not affecting each other at all. Instead, they’re both being affected and damaged by the same cause—poor diet. A change to diet could improve both cardiovascular and oral health, but you should contact your dental and health professionals for direct assistance.