Sadly its a fact of life which they discovered during the trials, but did not make public. It is a well documented side effect of the medication and is quite natural. the same effect follows any suddden reduction in weight as many low calorie dieters will vouch for. Stop the tretment and the weight loss reverses.. The problem is that fat cells, once created in the body remain sitting there until they die. They are like balloons that inflate while food is abundant, and deflate when it is scarce. The only way to maintain weight loss is to adopt a maintenance diet that either keeps calories low and includes exercise, or a diet that reduces cabohydrate intake again with some exercise. and this diet will need to be adopted as a way of life. Either that or go back onto the Ozempic. think of your fat cells as a rechargeable battery. Eat and it charges, use it and it empties.
Some fat cells (mitochondria) can be converted into muscle tissue instead, by exercise, so this is a way of reducing fat, but actually puts on weight as it is denser than the original fat cell. Stop exercising, and the muscle returns to being a fat cell.
As normal dieters will attest, this is the revolving door syndrome of dieting. human adipocytes have a lifespan of around 10 years before they wave bye bye.and get replaced. apparently insulin resistance prolongs the problem. The spare tyre iis always one of the last things to shift.