Thanks anyway.
Its not actually so bad having a stoma, but I am scheduled for an internal pouch operation. The only thing it has stopped me doing is full contact martial arts.
I'm from the UK. The doctors tried to prevent operating on me for as long as possible but it got really bad, really quickly. My colon ruptured and I would have bled to death if I had not had surgery (luckily I was in hospital at the time

). I'd rather have a stoma than have to suffer pouchitis if its anything like colitis.
When you say lift no more than 10kg, is that lift no more than 10kg in a particular way, i.e. bench press, or squat (which would be really lousy) or is it just that you should not lift more than 10kg in any way?
Do you know what damage the lifting can do? I had a hernia last Christmas. Perhaps the lifting caused it?