I am 41 and just diagnosed with a tortuous colon. I have severe IBS. Could having a tummy tuck help in any way? (photos)

I'm sorry to hear about the gastrointestinal problem you are experiencing. I would not expect the tummy tuck procedure to help in this regard.  The tummy tuck procedure would help with the aesthetic appearance of your abdomen.  Generally, the operation involves removal of excess skin/adipose tissue and usually plication (re approximation) of the abdominal wall muscles (that may have spread with pregnancies and/or weight gain/loss).   Liposuction surgery is a tool often used for contouring purposes during these procedures. Best wishes.