mRNA is the ultimate biohacking tool. You can potentially use it for weight loss by improving metabolism without exercising and a few other things.
I won't be injecting any mRNA to loose a few kilos anytime within the next multiple decades. Metabolism is complicated and there are some really nasty and weird metabolic diseases out there, based on some small regulatory feedback loop being broken. Don't fix a working system! If your weight bothers you, just go for walk or a swim once in a while. Have a salad.
It is super annoying when people post crap like this, as though that's all it would take to address the obesity epidemic.
By the way, there is approximately zero effect on weight in response to "going for a walk or a swim once in a while".