Comment by krisroadruck

it feels like you are being deliberately obtuse so I may be wasting my time, but I'll attempt to assume the best and try one more time. This is very basic correlation vs causation stuff. The side effect is related to rapid weightless of any kind. Weightloss is a "side effect" of the drug. Hairloss is a side effect of rapid weight loss. There is a chain of effects there but it's not X causes Z, it's X might cause Y, which causes Z. This distinction matters less for negatives - still good to tell people but for positives it is disingenuous. If you don't lose weight, your sleep apnea doesn't go away. Your joint pain doesn't get better. Your blood pressure doesn't go down - because the drug doesn't cause those things, the weight loss does.