Did you lose weight during prostate cancer treatment or due to cancer?

I wish I'd have lost some weight when I was diagnosed. But normally I tend to gain weight unless I watch my diet somewhat closely. Once I got the diagnosis I tended to relax my diet control and "treat" myself with tasty snacks and my weight started rising. I had to work pretty hard to drop a few pounds before surgery. All that said, I do believe that generally the physical and emotional stress of cancer tends to lead to weight loss. Just not for me.

Perhaps you aren't eating as large of portions or not indulging as much or eating as often or snacking as much. People who lose weight, cancer or otherwise, tend to do so from reducing caloric intake and I know people, say on chemo, just don't have much of an appetite. As long as your weight loss isn't unhealthy then you likely have nothing to worry about, but something has likely changed beyond just cancer, your intake has changed somewhere or your resting caloric expenditure has increased so eating the same amount may have gone from maintenance to loss.

I lost 50 pounds while being treated for prostate cancer. It was mostly from having no appetite at all, and probably partly from being depressed. Even the sight of food repulsed me some days. I needed to lose about 15 pounds. Now that my treatment has been over for almost six months I've gained about 10 pounds back.

I got so depressed before surgery, thinking about the worst quality of life outcomes, I didn't eat for three days. I get it.

Not sure if you are on any drugs. ADT drugs give many people bigger appetites, and they gain weight. This is a personal decision as other people have said. I weigh myself every day and base what I eat on what I weigh, It sounds like you are keeping the same diet, but losing weight

I have had a couple of times in the last five years when I lost five or 10 pounds, Over a couple of months and could not gain it back without eating significantly more. I’ve had PC for 15 years but those were the only times.

Just having prostate cancer, doesn’t normally cause weight loss, right away. It would normally take a long time for your system, to be degraded to the point that that would happen. Of course, if you had a Gleason Nine or 10 and a high decipher score your cancer had spread a lot…….But you don’t give us a clue about that.

You have to dig into his previous comments, G8: https://connect.mayoclinic.org/discussion/its-official-i-have-prostate-cancer/

Anxiety can increased your metabolism because of stress hormones like adrenaline and cortisol, this might lead to temporary weight loss.

Does this sound like it could be the problem?

It is my understanding that cancer cells have a higher metabolism than normal, healthy cells. Hence weight loss.