A bacteria that can create calories out of thin air sounds like it’d be useful, if true.
The belief in bacteria causing obesity is so prevalent in the medical world, that you can’t donate fecal matter for a fecal transplant if you’re above a certain body fat percentage, because it’s believed bacteria obese people carry that caused them to become obese will make a thin person obese if the bacteria is transplanted to the thin person from the obese person.

Lucky you having been born in the prosperous West. Too bad you didn’t make the most of your free public education.
Maybe they’re American and paid for a poor one?