An ADD/ADHD condition requires stimulation in order to trigger a calming response, because these people have an underactive CNS (Central Nervous System). read more
When you stop taking Ritalin, any weight you lost on the drug will come right back, with a little extra. The stimulant properties of the drug make your body burn more calories, and the side effects like nausea, vomiting and diarrhea make you lose your appetite -- that's where the weight loss comes from. read more
ADD/ADHD people, once medicated by stimulants like Ritalin will often lose weight for a time, but this is due to the fact that since their CNS is now receiving enough stimulation to be alert and focused, they no longer need to use food as a stimulant, so they lose weight. read more