The Deprogram Podcast

Interesting. I skimmed through the sources. It does read like about what I would expect. Mixed consensus and the studies tend to be focused on college campuses and self reporting. The largest one mentioned, if I read right, also admits that it's somewhat of a causal link and may not be controlling for whether it's that people who are already worse off in mental health are more likely to seek out casual sex to compensate, or that casual sex is the cause itself.

It may have some crossover with use of porn, in that it can have negative outcomes due to the "disposable" nature of how a person can perceive it and the missing emotional connection when coming down from the sexual "high", but can also be healthily enjoyed if the person has stable emotional connection through other means and is not trying to compensate for that with it.