I follow Dr. Michael Greger. He speaks often about healthy and unhealthy weight loss. One of his quotes is along the lines of "the purpose of with loss in not to fit into a skinnier casket." You may enjoy this talk; he has a unique speaking style, but he is highly credentialed, so try not to be put off by his tone. https://nutritionfacts.org/video/evidence-based-weight-loss-live-presentation/