Colorectal Cancer Screening: When Should You Get Tested?

Author : drviraj lavingia | Published On : 11 Aug 2026

What Exactly Is Screening?

Screening simply means testing for early signs of cancer or pre-cancerous changes in people who don't have any symptoms yet. It's a preventive step, not a diagnostic one triggered by illness.

It can detect small growths called polyps before they ever turn cancerous.
It can catch cancer at an early, more treatable stage, sometimes years before symptoms would appear.
It shifts the entire approach from reacting to a problem, to preventing one.

This is exactly why screening guidelines exist — not to alarm people, but to catch things early when treatment tends to be simpler and more effective.

At What Age Should You Start?

For most people, the general recommendation is to begin screening around age 45, even without any symptoms.

Ages 45 to 75 – regular screening is generally recommended for average-risk individuals.
Above 75 – screening decisions become more individualized, based on overall health and prior results.
Below 45 – screening isn't routine unless there are specific risk factors, which we'll cover next.

It's worth noting that colorectal cancer cases in younger adults have been rising globally, which is why doctors are paying closer attention to symptoms in younger patients too, even outside the standard screening age.

Who Should Consider Screening Earlier?

Certain factors can move up the recommended starting age significantly. If any of these apply to you, it's worth having a conversation with a doctor sooner rather than later.

Family history – a parent, sibling, or child diagnosed with colorectal cancer or related conditions.
Inflammatory bowel disease – conditions like ulcerative colitis or Crohn's disease over a long period.
Genetic syndromes – conditions like Lynch syndrome, which carry a higher inherited risk.
Personal history of polyps – if you've had precancerous polyps removed before, follow-up screening becomes more frequent.

Dr Viraj Lavingia, a GI Specialist, often points out that patients with a family history tend to underestimate its importance, assuming screening only matters once symptoms appear — which isn't the case at all.

What Do Screening Tests Actually Involve?

There isn't just one way to screen for colorectal cancer. Depending on your risk level and preference, a doctor may recommend one of the following.

Colonoscopy – considered the most thorough option, allowing direct visualization and removal of polyps in the same sitting, typically repeated every 10 years for average-risk individuals.
Stool-based tests – simple, non-invasive tests that check for hidden blood or abnormal DNA markers, usually done annually or every few years depending on the type.
Sigmoidoscopy – examines the lower part of the colon, done less frequently than colonoscopy but still useful in certain cases.

The right choice really depends on individual risk factors, so it's best discussed directly with a doctor rather than picked off a general list.

Why People Delay Screening (And Why It's Worth Rethinking)

"I feel completely fine." That's actually the point — screening is designed for people without symptoms.
"The procedure sounds uncomfortable." Colonoscopies are done under sedation, and most patients report far less discomfort than they expected.
"I'll do it later." Later often turns into years, and early-stage detection is exactly what screening is meant to preserve.

A Simple Way to Decide

Patients researching cancer specialists in Ahmedabad often find it helpful that Dr Viraj Lavingia takes time to assess individual risk factors before recommending a screening schedule, rather than applying a one-size-fits-all timeline.

If you're 45 or older, or you fall into any higher-risk category regardless of age, it's worth having this conversation with a doctor sooner rather than later. Screening isn't about expecting the worst it's about giving yourself the best possible chance if something does need attention.