I was on Zoloft for 15 months. I stopped exercising after 25 years nonstop, I gained 50 lbs on the scale (more like a hundred since my muscles atrophied).
Finally I couldn't stand myself and went on the mother of all diets, lost 100-120 lbs of fat in nine months and got into the best shape of my life. After being obese seeing that first line of my returning six-pack was just glorious.
Nine months counting calories, treadmilling off 500 of them every day, lifting weights. Proudest achievement of my life.
At 66 I am using over 300 pounds on some upper body exercises.
Healthy food? I live in Vietnam. To eat a junk diet would take some work.