Karatbars cannot be counterfeited because of the security features on the card.
USA Staatsverschuldung auf Rekordhoch
Overall, I looked at 4 more studies. Two of them showed weight loss of a few pounds over a period of 8 weeks (9, 10), but the other two showed no effect (11, 12). So… unfortunately, the weight loss effects appear to be both weak and inconsistent.