It is mixed. It can be a cure for some people. Last time I looked my impression it seemed like about half the people has only moderate rebound or less. You hav

It is mixed. It can be a cure for some people. Last time I looked my impression it seemed like about half the people has only moderate rebound or less. You have a lot of results that look like this, with an average bounce rebound of 2/3s of the loss. https://pubmed.ncbi.nlm.nih.gov/35441470/ https://pubmed.ncbi.nlm.nih.gov/35441470/ However, detailed analysis usually shows a bimodal distribution, with people who maintain or even lose more, and those that go back or even gain relative to baseline.