I had a gastric sleeve over 10 years ago. I weighed 320 and was 5'2" and 54 years old. I also have asthma - life long and I needed a surgery that would allow me to take oral steroids and other life sustaining medications that also cause weight gain... but breathing is an important concept. I could not have a bypass surgery, as my pulmonary docs said that the surgery would make the use of oral steroids impossible and I am prone to pneumonia from years of impaired airways. (And yes, I am working from home right now !!!)
I went from 320 pounds to 180 pounds. I unfortunately gained 40 pounds back in the last few years, mostly due to not being able to exercise much and well.... life. I got pissed off at myself last July and went back to high protein, and low carb and more veggies and cut out the slider foods... and I have lost 25 pounds. Yes, I am still obese, but for me, who weighed 320 pounds, I now weight 193. (27 pounds down actually) since this July. At 64 years old I will probably stick around the 180s to 190. Yes - it could and should be less, but my doctors are pleased and I have been pretty darn healthy for me. I take care of my critters, keep up a house, a career as a social work supervisor, I garden and am active.
For me, I have kept off over 100 pounds and now am back to having lost 137 pounds and holding. I highly recommend it. Oh, I was in the hospital 2 nights after surgery. Mostly to stabilize my lungs. And I had surgery at 54 years old