A systematic review and meta-analysis published in The Journal of General Internal Medicine found that periodontal disease increases the risk of coronary heart disease by 24 to 34 percent. One reason might be the presence of harmful bacteria in the mouth, which not only causes gum disease but also promotes systemic inflammation throughout the body.
This article is about the Latin phrase. For the physical theory, see quantum electrodynamics. For other uses, see QED (disambiguation). Q.E.D. (also written QED) is an initialism of the Latin phrase quod erat demonstrandum, meaning what was to be demonstrated, or, less formally, thus it has been demonstrated.
The definition of a goad is a stick with a pointed or electrically charged end that is used to move animals, or is something that urges someone to do something. An example of a goad is a tool used to drive cattle into a special area. An example of a goad is money promised to someone if they complete a certain action.