It was "virtually unheard of in the 20th century," but bowel cancer in people under the age of 50 now accounts for "around 10% of all new cases worldwide," said New Scientist. In the U.S., the incidence rate of early-onset colorectal cancer is expected to double by 2030," which means "10.9% of all colon cancers and 22.9% of all rectal cancers will be diagnosed in young adults," said the American College of Surgeons — a "stark comparison to 2010," when "4.8% and 9.5%, respectively, were diagnosed in this same cohort."
What's bowel cancer? This type of cancer, also called colorectal cancer, is caused by the growth of abnormal cells in the inner lining of the large bowel, which includes the colon and the rectum. Symptoms can include bleeding from your rectum, blood in your feces, a change in your "bowel habit," or losing weight without trying.
According to American Cancer Society estimates, "154,270 people in the U.S. will be diagnosed with colon and rectal cancer this year, and 52,900 will die from the disease," said the Colorectal Cancer Alliance. Bowel cancer is the "fourth most common cancer in the U.S. among men and women combined."
Why are rates in younger people rising? Experts are "still in the early stages of understanding" why there has been a rise in early-onset colorectal cancer, said The Guardian, and research has produced conflicting results. But higher consumption of junk food, lower physical activity and the "obesity epidemic" are "likely to be among the factors."
There has also been a "soaring" increase in the use of antibiotics, said New Scientist. They can have a "profound impact on the gut microbiome, and there's good evidence that disturbances to the microbiome are a risk factor" for bowel cancer.
How can you reduce your risk? Experts agree that diet is an "important factor," said The Guardian. Eating more fiber and cutting back on alcohol and sugary drinks should also help, as well as maintaining a healthy weight and getting regular exercise.
You could also look at upping your calcium intake. According to researchers at Oxford University in the U.K., women who drink a large glass of dairy milk every day, said The i Paper, can cut their bowel cancer risk by nearly a fifth. |