Around one out of five adults age 50 or older in the United States hasn't undergone a colorectal screening, according to the Centers for Disease Control and Prevention (CDC). And if you're one of them, you may be avoiding a screening because you'd prefer not to get a colonoscopy.

( This is what really happens when you get a colonoscopy .)

A 2012 study in JAMA Internal Medicine revealed that when doctors told their patients to get a colonoscopy, just 38% of patients followed through with the suggestion. That's a disturbingly low percentage, given that colonoscopies have a high rate of detecting colorectal cancer, one of the three most prevalent cancer types. Yet there was a bright spot: When patients were given a choice of colorectal cancer screening options, 67% moved forward — wit

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