I think only free for diabetes, not for weight loss.
I was type 2, but went on the ganja diet, lost a bunch of weight and am no longer diabetic.
The ganja diet, for me, caused me to eat a lot less. I'd pig out and eat 15 chicken wings, for example. Then I tried to do that after smoking a bit, and after eating 5 or 6 I would think that it's too much. Somehow it migrated to non-high and now I couldn't eat 15 wings at once even if I hadn't smoked.