There’s a Troubling Rise in Colorectal Cancer Among Young Adults

Some experts blame our modern, sugary diet, while others think that gut microbiome changes and sedentary lifestyles may play a role. Altogether, the causes are far from clear.

katya katarina zimmer
| 7 min read
polyp colorectal cancer colonoscopy

Register for free to listen to this article
Listen with Speechify
0:00
7:00
Share

ABOVE: Adenomatous polyp
© ISTOCK.COM, SELVANEGRA

Rachel Winegar, a mother of three from Colorado, has had trouble with her digestive system for as long as she can remember. So when she neared 30 and her problems intensified, colorectal cancer did not cross her mind. Her doctor figured it was perhaps a chronic condition like celiac disease, ulcerative colitis, or Crohn’s disease. She was suffering: “rectal bleeding even while passing gas, full feeling, bloated, nauseous, low energy, feeling of sitting on something, pencil-thin stools,” she writes in an email to The Scientist.

After she finally went to a doctor, Winegar was scheduled for a colonoscopy. But instead of finding evidence for any of those conditions, her doctor discovered a mass the size of Winegar’s palm in her rectum, she recalls. It was stage 4 cancer. “My husband and our three kids and I have had our lives turned upside down because of ...

Interested in reading more?

Become a Member of

The Scientist Logo
Receive full access to more than 35 years of archives, as well as TS Digest, digital editions of The Scientist, feature stories, and much more!
Already a member? Login Here

Keywords

Meet the Author

  • katya katarina zimmer

    Katarina Zimmer

    After a year teaching an algorithm to differentiate between the echolocation calls of different bat species, Katarina decided she was simply too greedy to focus on one field. Following an internship with The Scientist in 2017, she has been happily freelancing for a number of publications, covering everything from climate change to oncology.
Share
A greyscale image of cells dividing.
March 2025, Issue 1

How Do Embryos Know How Fast to Develop

In mammals, intracellular clocks begin to tick within days of fertilization.

View this Issue
Discover the history, mechanics, and potential of PCR.

Become a PCR Pro

Integra Logo
3D rendered cross section of influenza viruses, showing surface proteins on the outside and single stranded RNA inside the virus

Genetic Insights Break Infectious Pathogen Barriers

Thermo Fisher Logo
A photo of sample storage boxes in an ultra-low temperature freezer.

Navigating Cold Storage Solutions

PHCbi logo 
The Immunology of the Brain

The Immunology of the Brain

Products

Sapio Sciences

Sapio Sciences Makes AI-Native Drug Discovery Seamless with NVIDIA BioNeMo

DeNovix Logo

New DeNovix Helium Nano Volume Spectrophotometer

Olink Logo

Olink® Reveal: Accessible NGS-based proteomics for every lab

Olink logo
Zymo Logo

Zymo Research Launches the Quick-16S™ Full-Length Library Prep Kit