The Alarming Rise in Early Onset Cancer For People Under 40
*Special Report
A couple of years ago I attended a conference that focused on the diagnosis, identifying trends, and new treatment options for cancer. Fast forward to 2026 and a few of those predictions, for a special group are unfortunately true. The the rise in early onset cancers among young adults and people under 50 (especially those < 40).
Early-onset cancer is typically defined as a cancer diagnosed in adults under the age of 50. I fit into that category with a diagnosis of Wilms Tumor (kidney cancer) at the age of 3 and an early stage Triple Negative Breast Cancer Diagnosis at the age of 49. While cancer is more frequently diagnosed in older adults, cases among younger people have been steadily rising worldwide. The American Association of Cancer Research - AACR - has examined and released data on the rise of early onset cancer across various cancer types.
For young people attempting to get that initial first screening, that can be super difficult. I remember, even with a history of breast cancer (my maternal grandmother passed away from metastatic breast cancer at 44) how my male gynecologist dismissed my worries (proclaiming loudly that I was young and healthy), over obtaining a mammogram, only to have to call and apologize profusely over the phone, when the results came back that I needed a follow up because of a “spot” found on the imaging.
Shout out to the NYTimes for doing a great job of highlighting seven stories of young people diagnosed with cancer and their experience. I’m a huge fan of patient stories, as it is an immediate nod to the power of the patient voice and examples of what we are really facing.
Being told that you are young, “look healthy” or have no family history can be a deterrent and an unintentional bias and barrier when a young person is trying to get screened. Add on the appointment wait times (especially for new patients) and battling with insurance companies to cover the cost of screenings can lead to frustration and more important delay in obtaining care!
Key Trends & Timeline
The 1990s: The incidence rate of early-onset cancers (especially colorectal and gastrointestinal cancers) began to significantly climb. For example, early-onset colorectal cancer has risen to become a leading cause of cancer death in younger adults
2010 to Present: Following 1990, the diagnosis rate accelerated steadily. National cancer registries note that adults in their 30s alone have experienced a nearly 20% increase in diagnoses since 2010.
Disproportionate Impact: While the 40–49 age group sees the highest number of overall cases, the largest percentage increase in incidence has been in adults aged 20–29
So … Why the Rise and Who is in the crosshairs?
There are a number of factors are are being studied. The exact causes are multifactorial. Key suspected drivers for these younger groups include exposure to ultra processed foods, obesity, and according to a spring 2026 CURE article gut health.
So what steps should you take if you are young and are thinking of getting screened:
Shift the Clinical Terminology
Request diagnostic testing: Ask for diagnostic workups rather than screening tests.
Frame by symptoms: Base requests on current, persistent physical irregularities.
Cite updated guidelines: Reference rising early-onset cancer statistics during appointments.
Demand chart documentation: Ask the doctor to document their refusal in your note.
Bypass Insurance Barriers
Review policy evidence: Check your evidence of coverage document for diagnostic rules.
Obtain prior authorization: Ensure your doctor submits clinical notes before scheduling tests.
Use exact billing codes: Verify the billing office uses diagnostic codes, not screening codes.
Prepare formal appeals: Request an expedited internal appeal if coverage is denied.
Document Your Risk Profile
Map family history: Document cases of cancer, age of diagnosis, and blood relations.
Track physical symptoms: Record dates, severity, and progression of unusual changes.
Identify environmental exposures: Note workplace hazards, lifestyle factors, or past radiation.
Request genetic counseling: Seek a referral for genetic testing if hereditary patterns appear
Execute Next Steps
Gather records: Collect all personal medical histories and family data.
Schedule consultation: Book an appointment specifically focused on these concerns.
Seek second opinion: Find a specialist if your primary doctor dismisses symptoms
Lastly does an organization that is supportive of young people diagnosed with cancer exist? Yes and I’ve highlighted two:
YSC - Young Survivors Coalition - providing info & support for young breast cancer patients
Stupid Cancer - supporting the adolescent and young adult (AYA) cancer community
So, if you are young and you are newly diagnosed, currently in treatment, a caregiver or want to discuss treatment options, supports, biomarker testing or thinking of participating in clinical research, please book a free 1:1 consultation at Karen’s Club.org.
Hugs.
Karen
