SSRI’s do cause weight gain - not in the short term maybe but definitely in the long term. Of course, everyone’s body chemistry is different and it depends on your personal metabolism but the action on the nervous system with effect on the endocrine system is indisputable. I have been on these meds myself and my experience with SSRI’s was this
I felt tired and sleepy all the time.
I was happy but had no motivation to workout. The drive to go balls out was gone. And I felt weak as hell in the gym. And frankly, i didn’t care.
I didn’t have an appetite but the lack of activity from drowsiness and lack of motivation caused the weight to creep up.
I felt a distinct impact on my metabolism. I no longer felt the “heat” from my revved up metabolism. I felt cold all the time. After much research I found that people were having problems with their thyroid after taking these meds. Some as extreme as thyroid cancer. Essentially, SSRI will decrease your BMR. Its like an induced state of hypothyroidism. This shouldn’t be permanent if SSRI’s are taken for a short period of time. And if you can push past the fatigue they cause, you should still be able to lose weight. Your doc will deny all of this of course.
I got off SSRI’s because I am borderline hypthyroid to begin with and I couldn’t handle losing my strength gains. Now I supplement with natural stuff to help with my dysthymia complicated by major depressive episodes. Its tricky but it can be done. It enables me to cope without being numbed out.
I have done research on this for the last 10 years.
The bottom line of any drug is that it can do anything at anytime and scientists don’t know the full effect and potential of these drugs.
Good luck with your journey man, I’m there with you.