Hi Tuna - It is true that these will reduce your appetite, they do this by releasing stores of sugar held into your body. Tons of coffee will do the same job. Fine in the short term, however, long term use of stimulants messes up your blood sugar control, when it dips it leads to fatigue, mood swings, anxiety and sugar craving, weight gain and not to mention dependence on stimulants. There is always a price to pay for trying to cheat the body into losing weight I'm afraid. Take care - Amara