After having a hysterectomy ,will it cause you to lose weight?

It all depends. I know that I lost about 20 lbs after I had mine, but that was because food lost all its taste to me for about 4 weeks and I had no desire to eat (side effect of the anesthesia). Once I got an appetite again, I only gained back about 5 of the 20lbs because I watched what I ate and began to exercise as soon as I could. Having a hyst. can cause you to gain weight due to the lack of hormones and your body not burning calories as fast as it once had. But I wanted to lose about 15lbs before I had the surgery anyway, so it worked out for my benefit, lol. Hope this helps you!