How do you fix rectal prolapse?

Surgery: Pelvic prolapse, and, specifically, rectal prolapse, can be caused by: pregnancy, childbirth, obesity, menopause, chronic cough (asthma), to name a few. The only effective and long-term treatment is surgery, but this is almost always out-patient, with a fairly quick recovery.

Surgery: Surgery is often required to treat true rectal prolapse. Treatment of constipation is helpful.

No: That's a surgical problem, and left to a rectosigmoid surgeon.