science

That was a great point. I was assuming it adds stress which exacerbated symptoms of mental health conditions that incentivized the couples to get diagnosed.

It's not always free in scandinavialand. If you have a referral from a doctor due to a mental illness or the like, it's probably covered. But if you seek therapy out if own initiative you probably have to pay out of pocket.

Source: As a scandinavian I looked into it once, but upon noticing the hourly rate I figured that it would probably cause more mental distress than it would solve.

It's not free, but it's not expensive either, max of around $250 a year for all healthcare. But mental health care in Sweden is abysmal, if you're lucky they'll give you 12 sessions with a psychologist who is apathetic to your issues and then let you go, because they seem to see it as something that once your sessions are done, should be fixed.

This in a country rife with social isolation, months of dark and cold, hobbies that are too expensive to do and a generally unhealthy society.