Early-Onset Colorectal Cancer Risk Factors: A Young Adult's Complete Screening Guide

# Early-Onset Colorectal Cancer Risk Factors: A Young Adult's Complete Screening Guide

> **Quick answer:** Colorectal cancer risk in adults under 50 depends on four main domains: family history (especially first-degree relatives diagnosed under 60), lifestyle (diet, activity level, smoking, alcohol), medical history (IBD, prior polyps), and active warning symptoms. Fizzty's screener returns one of three results — Low Risk, Moderate Risk, or High Risk — each with specific action steps tailored to that risk profile.

Colorectal cancer is now the #1 cause of cancer-related death in US adults under 50, and most young adults have no idea which factors actually put them at risk. This guide covers the science behind that rise, the risk factors your gastroenterologist looks at first, and exactly when you should push for earlier screening.

## Why Colorectal Cancer Rates Are Skyrocketing in Young Adults

The trend is alarming and it is accelerating. A landmark JAMA study tracking US cancer mortality from 1990 to 2023 found something counterintuitive: while overall cancer deaths in people under 50 dropped by 44% over three decades, colorectal cancer incidence in that same group increased by 1.1% every single year since 2005. It has gone from the fifth leading cause of cancer death in young adults to the first.

Today, approximately 1 in 5 people newly diagnosed with colorectal cancer in the United States is under age 55. According to 2026 ACS estimates, roughly 108,860 new cases will be diagnosed in the US this year, with about 55,230 deaths — and young adults bear a disproportionate share of that burden.