Weight gain after liposuction in Liposuction Posted August 5 · Report reply On 7/26/2019 at 2:47 PM, parkislee said: If you are having a good lifestyle and exercise is a part of your day, most probably you won't gain weight after lipo. If you do so, don't worry it won't be as bad as before. Consulting with your surgeon will be much better in this situation, cause there could be another reason for gaining weight. Don't freak out All the best. Honestly no idea. I even use my fitness pal to track my food intake. All i can think of is i lift heavy weights and im a lot stronger now than a year ago. That or i must have some hormonal or thyroid issue!