There are plenty of shortcuts. I've fixed my sleeping schedule by taking lorazepam and melatonin every night. I've gotten over many illnesses faster than healing naturally by taking many a pill. Why shouldn't there be medicine for issues with weight, especially for people who haven't been able to beat it themselves in decades? I've been fat most of my life and managed to lose a significant chunk of it by myself and regained it all over the following 5 years. Honestly, at this point, it's not happening without something like Ozempic. And I think it's the same for many people. Also, I don't care for the "not natural" debate, personally. If I wanted everything to be natural, I'd live in the woods and hunt animals.
You lose .5-1 lb of fat every day you water fast; you will naturally increase stem cells, peptides, growth hormone, etc.
You can do this for months if needed.
You will reset your immune system, insulin response, eat off cancerous cells, etc.
The bigger opportunity is to figure out why all of these things are going on, typically unprocessed emotional trauma, environment, and choices.