Colorectal Cancer: A Rising Concern Among Young Adults
Recent studies from the American Cancer Society show that colorectal cancer has become the leading cause of cancer-related deaths for men and women aged 50 and younger. While some risk factors like age, family history, and genetics are beyond our control, lifestyle choices can significantly influence our risk of developing this disease.
One major contributor is alcohol consumption. Research indicates that alcohol is linked to at least six types of cancer, and the International Agency for Research on Cancer (IARC) classifies it as a Group 1 carcinogen, which means there is strong evidence that it causes cancer in humans.
Dr. Tereza Cristina Sardinha, head of colon and rectal surgery at Catholic Health in New York, explains that alcohol, or ethanol, is broken down in the body into acetaldehyde, a substance that can damage DNA in our cells over time, potentially leading to cancer. Additionally, alcohol affects the gut microbiome, which is crucial for our overall health.
“The gut’s microbiome helps protect us from many diseases, and both diet and alcohol can alter the bacteria living there,” Dr. Sardinha noted. When the balance in our gut is disrupted, it can lead to issues like DNA damage and inflammation, which are closely linked to cancer development.
The relationship between alcohol and colorectal cancer is dose-dependent. Regular drinking over many years can significantly increase the risk of developing this type of cancer. For instance, consuming two alcoholic drinks daily can raise the lifetime risk of colorectal cancer by at least 25%. Heavier drinking, such as three to five drinks a day, poses even greater risks.
Dr. Sardinha emphasizes that it’s not just how much you drink but how often you drink that matters. She recounts a patient who consumed six beers daily and developed colon cancer without any other apparent risk factors. Thus, she advises her patients to limit or completely avoid alcohol intake.
However, quitting alcohol doesn’t mean the risk vanishes immediately. It may take around ten years to see a reduction in cancer risk after stopping drinking.
Dr. Nathan Goodyear, an integrative medicine physician, pointed out that not all alcohol types impact colorectal cancer risk equally. Spirits have a higher risk than beer and wine. A study from Denmark even found that moderate wine consumption might be associated with a lower risk of death compared to beer and spirits.
Beyond cutting down on alcohol, maintaining a healthy lifestyle can further reduce the risk of colorectal cancer. Regular exercise is crucial, as inactivity can increase cancer risk. Smoking also poses a significant risk for various cancers, including colorectal cancer.
Dr. Sardinha encourages adopting a high-fiber diet, which promotes healthy bowel function. A low-fiber diet can lead to constipation and increase the contact time of potentially harmful substances with the bowel walls, raising the risk of DNA damage.
While we cannot change our genetic risks, adopting healthier lifestyle choices can make a significant difference in managing the risk of colorectal cancer.
