I have never heard that complaint from anyone post RP.  So, I guess I dunno.

But, congratulations on your PSA!

My wife's father had radiation  and lupron for his prostrate cancer
and is not taking any viagra or the like but has lost a lot of
weight,he say's that everything tastes different and some of the
food's he used to enjoy actually taste bad to him now.Maybe something
like that is happening with you as well.

I have never heard of this either.

I can think of two ways to think about this.  One is, unless
you're very tall, this is a good thing.  The other is, maybe
something is wrong, but probably not related to the prostate
cancer or its treatment.

I'm not knowledgeable about what conditions can cause weight
loss.  I know there are lots of them, from hyperthyroidism to
colon cancer to various kinds of infections to depression.  There
are good reasons too, like just feeling better about life and not
feeling a need to eat for emotional gratification.

You can ask your family doctor about this.  He'll probably have a
list of standard questions to ask someone who is losing weight in
order to check for common causes.

Good luck.

   Alan

I didn't notice anything like that following my RP.  But three years
later, during a period when I was very busy getting ready to move from
our old house to a condominium and during which I had repeated back
problems, I lost about 20 lbs in a few months.  I had been trying to
lose weight somewhat half heartedly and not very successfully for years,
but suddenly I was able to lose weight without special effort.   A lot
of this, I think, has to do with your level of activity and what else
you have going on in your life.  It is possible to lose weight because
of some serious medical condition, but in those cases, you should expect
to feel tired or have other symptoms.  If you feel well, don't worry
about it, but if it goes a lot further, check with your doctor who may
want to do some tests.