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Colorectal and gastrointestinal cancers are steadily increasing among people under 50 — and health experts warn that America’s dietary habits are playing a major role. As part of the “Ask the Expert” series with Bon Secours St. Francis, specialists explain how everyday food choices may be quietly increasing cancer risk.
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Younger Adults Facing Higher Cancer Rates
Doctors are sounding the alarm as GI and colorectal cancer diagnoses rise globally in younger populations.
“We’re seeing cancer rates go up worldwide for younger populations … a big, big cause for alarm,”
— Dr. Veeral Oza, Medical Director of Gastroenterology, Bon Secours Mercy Health
While genetics can contribute to cancer development, experts note that lifestyle factors — particularly diet — are driving much of this surge.
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The Western Diet: A Major Culprit
Dr. Oza links the rising cancer trend to the increasingly common Western-style diet.
This type of eating pattern typically includes:
- High saturated fats
- High cholesterol
- Excessive red meat
- Low intake of fruits and vegetables
“These dietary patterns have led to obesity,” Oza explained — and obesity is strongly associated with increased colon cancer risk.
“Diets low in fruits and vegetables and high in saturated fats and red meats are associated with higher rates of developing colon cancer.”
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It’s Not One Meal — It’s Daily Habits
A single indulgent meal won’t harm you. But long-term patterns will.
“Food choices made daily for years — for decades — lead to higher cancer rates,” Oza said.
Unhealthy diets combined with inactivity and weight gain significantly elevate cancer risk.
Prevention Starts With Better Habits
Doctors emphasize three key steps to reduce risk:
- Eat a balanced, nutrient-rich diet
Exercise regularly - Get screened beginning at age 45
Screening options include blood tests, stool tests, and most effectively, colonoscopy.
“The best is a colonoscopy where a gastroenterologist uses a camera scope to examine the colon.”
Symptoms to Watch For
Experts urge people to seek medical attention if they notice:
- Unexplained weight loss
- Dark stools
- Blood in stool
- Abdominal pain
Those with a family history of colon or GI cancers may need earlier screening.
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