If the extra weight threatens your well-being or life, it may be accurate. Otherwise, it can be your choice rather than "have to." It becomes a "want" rather than a "should."
I was 100 pounds overweight by strict medical standards. I was getting high blood pressure and other symptoms. I lost 50 pounds, and now, with exercise and proper diet, the problems are controlled. Unless I was concerned about my social image related to my weight, I don't "have to lose weight." I might want to, but I don't "have to."
I hope this helps.
Why is "I have to lose weight" not an accurate statement?
2 answers
If this is a physics question it might be that you should lose mass. Weight can change with location (weight is just the measure of gravity's pull) but mass does not.