Kinda interesting. But the actual research result is seems to be:
There are two sub-varieties of human beige fat cells, both of which convert body fat into heat. The newly-discovered sub-variety uses a different biochemical pathway for that conversion. Both sub-varieties seem quite beneficial for those humans who are at higher risk from obesity-related disorders than from starvation.
The "could lead to better health" part is pure SciFi. Maybe some good drugs could be developed to fire up this new sub-variety's activity. But more likely not.
I did some experiments towards replicating it but I could not produce enough stress or the right kind of stress or the fact that I was control of the situation meant it would never work. I wish had some biofeedback device which could detect activation of those β3-adrenoceptor neurons because I am good at biofeedback.
Trying to replicate this in other people is something that would violate ethics for human subjects. Putting together an encounter group with 20 people and having 19 gang up and bully the other for a whole weekend behind a locked door would probably be sufficient stress to cause a psychogenic fever sometime, but I doubt you'd get a response more than 20% of the time so it's a dead end. You're better off with Ozempic.
There are two sub-varieties of human beige fat cells, both of which convert body fat into heat. The newly-discovered sub-variety uses a different biochemical pathway for that conversion. Both sub-varieties seem quite beneficial for those humans who are at higher risk from obesity-related disorders than from starvation.
The "could lead to better health" part is pure SciFi. Maybe some good drugs could be developed to fire up this new sub-variety's activity. But more likely not.