Doctors are raising the alarm that gastrointestinal cancers are being diagnosed in growing numbers of patients under the age of 50 — and colorectal cancer is not the only concern. According to Antigua News Room, oncologist Dr. Christina Wu of the Mayo Clinic Comprehensive Cancer Center in Arizona says the trend spans multiple cancer types across the gastrointestinal system.

"People under 50 are not too young to develop gastrointestinal cancers," Dr. Wu said. "If young adults notice new or persistent symptoms, it's important to get them worked up."

At Mayo Clinic, early-onset gastrointestinal (GI) cancers are defined as those diagnosed in patients below age 50. Research identifies colorectal cancer as the most common type worldwide among this age group, followed by stomach cancer, esophageal cancer and pancreatic cancer. Less common early-onset GI cancers include bile duct, gallbladder, appendix, neuroendocrine and small bowel cancers.

"More research needs to be done to understand what causes the rise in incidence of early-onset GI cancers," Dr. Wu said. "We know that certain factors can increase the risk of developing GI cancers, and early detection gives patients a better chance of successful treatment."

Risk Factors

Several factors can increase a person's risk of developing early-onset GI cancers, including genetic conditions, chronic diseases and lifestyle choices.

Early Detection and Symptoms

Screening recommendations for colorectal cancer vary by country but generally begin in a person's 40s or early 50s. In the United States, screening is recommended starting at age 45 for those at average risk. Individuals with risk factors — such as a family history of colorectal cancer — may need to begin screening earlier.

Maintaining a relationship with a primary care clinician, attending regular health checkups and discussing concerns with a healthcare professional can help determine what screening or tests are appropriate based on individual risk factors.

In some cases, symptoms may be associated with specific cancer types. Dr. Wu stressed the importance of acting promptly when anything unusual arises.

"Any new symptoms that are persistent or worrisome should prompt a visit to a healthcare professional to get checked out," she said. "If symptoms are ignored or not investigated, young adults may experience a delay between when they first experience symptoms and a cancer diagnosis. Recognising symptoms early is important."

Tailoring Care for Younger Adults

Young adults diagnosed with GI cancers often require multidisciplinary care, given differences in cancer biology as well as unique social and life-stage needs. Dr. Wu noted that treatment approaches are becoming increasingly personalised.

"Before starting treatment, we perform genetic testing and tumour profiling to identify mutations that may guide targeted therapies," she said. "These advances allow us to provide more personalised and effective treatment for our patients."

Younger patients may also need additional support, including fertility preservation services and resources to help navigate the emotional and practical challenges that come with a cancer diagnosis. Mayo Clinic's Early-Onset and Hereditary GI Cancers Program offers specialised, multidisciplinary care specifically for this patient population.

Innovations in Treatment

Advances in genetic testing and tumour profiling are enabling cancer care teams to offer more targeted treatments, including immunotherapy in select cases, and to identify patients eligible for clinical trials. For certain GI cancers, treatment may combine chemotherapy, radiation — including proton beam therapy — and surgery. Minimally invasive surgical approaches are also improving outcomes for some patients.

Mayo Clinic researchers are additionally exploring the use of artificial intelligence as an aid in detecting GI cancers, including colorectal and pancreatic cancer, signalling a new frontier in early diagnosis.