Mom is having colon cancer surgery at age 63. how long before bowels move and she can eat?

No: She should be fasting until her bowels move /until she passes gass and positive bowel sound on examination. Then her doctor can start her on liquid diet and advance the diet as tolerated. Discuss with her surgeon

Depends on recovery: After colon cancer surgery, most people are able to start an oral diet in 24-36 hours, are on a regular diet by postop day 4 or 5, and have a bowel movement by day 4 or 5 as well. Of course, there is a range of acceptable. Also, these approximate ranges can vary significantly in complicated situations. Best of luck to your mother; she has a good advocate in you.

Not long: All depends on the surgery but typically not long especially if done laparoscopically. Usually tolerating some PO in 3days.