How does having gingivitis cause heart disease and stroke?

So I know that getting gingivitis can cause heart disease and stroke but when people tell you that information they never tell you how or why which is really baffling. You'd think if someone is stating a fact they tell you the reason why. So how is this all connected? why do you get heart disease and/or stroke... show more So I know that getting gingivitis can cause heart disease and stroke but when people tell you that information they never tell you how or why which is really baffling. You'd think if someone is stating a fact they tell you the reason why. So how is this all connected? why do you get heart disease and/or stroke from gingivitis?
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