What is the reason for differentiating between liposuction and surgical operation regarding the permissibility of fat removal, even though both involve general anesthesia and are performed by a cosmetic specialist?

Fat is removed from the body in various ways, including non-surgical methods like exercise and fat-absorbing substances, and surgical procedures. Non-surgical methods are permissible as long as they do not harm the body, whether done out of necessity, need, or for cosmetic purposes. As for surgical removal, it is permissible if the fat causes significant harm, not merely for cosmetic enhancement.