Hi @goldie93, I see you posted back in October, but I wanted to again welcome you back to Connect. You pose a very good question regarding oversleeping and whether or not it can lead to heart disease.
I think the association of heart disease and oversleeping is the fact that "oversleeping" can be a sign of an underlying problem.
Here is some information I found on the subject:
According to the National Sleep Foundation, "Experts often talk about how Americans aren’t getting nearly enough sleep these days. But what about the opposite problem? Sure, it’s a lot less common, but is it bad to get way more than the recommended amount of sleep? The answer is yes.
First, a quick note: This is not referring to people who sleep slightly more than seven to nine hours a night. For instance, routinely getting 10 hours of sleep is still healthy, even though most people don’t need it (only about two percent of the population does). It’s also not about people who sleep in super late one Saturday after a long week, are dealing with jet lag, are exercising intensely (like training for a marathon), or are sick with the flu. This is about people who sleep 11 or more hours a night, day in and day out…." (see full article in the link below). https://www.sleep.org/is-it-possible-to-get-too-much-sleep/
I also found a study that came from the University of Colorado Boulder study of nearly a half-million people that states,
"Sleeping too little can impact the lining of the arteries, or endothelium, impact bone marrow development of inflammatory cells, but also lead to poor dietary choices and ill-timed eating (which can in turn impact weight and, thus, heart health). Sleeping too much may also boost inflammation in the body, which is also associated with cardiovascular disease." https://www.sciencedaily.com/releases/2019/09/190902142015.htm @goldie93, have you discussed with your physician about a predisposition to heart disease and oversleeping as a side effect to underlying issues? Do you currently have heart disease?