Alcohol and colorectal cancer is a concern of many people. But there is medical consensus that drinking in moderation is not a risk factor for colorectal cancer.

Alcohol (even drunk at high levels) is not a risk factor for colorectal cancer. That’s the conclusion of these medical groups.

• • National Cancer Institute.
  • National Library of Medicine.
  • American Society of Clinical Oncology.

But these groups have concluded that “heavy use” or “heavy drinking” may increase the odds of the disease.

• • American Cancer Society. the
  • Mayo Clinic.
  • Colorectal Cancer Alliance.

Risk factors for Colorectal Cancer

A risk factor is anything that may increase the chance of getting a disease. However, the link is not a strong one. A person may have many risk factors and never get the disease. On the other hand, a person may have no risk factors and get the disease.

There are a number of risk factors for colorectal cancer:

• • Age. The average at diagnosis is 72.
  • History of colorectal polyps or colorectal cancer.
  • History of ulcerative colitis or of Crohn’s disease.
  • Family history of colorectal cancer.
  • Race. African Americans and Ashkenazi Jews are at higher risk.
  • Diet. Eating lots of red meats, processed meats and animal fat may increase risk. But eating lots of veggies and fruits may reduce it.
  • Physical inactivity.
  • Obesity.
  • Smoking.

Possible Symptoms or Signs of Colorectal Cancer

Colorectal cancer can have any of a number of symptoms. But in its early stages, there may be no symptoms. So having regular colorectal cancer screening beginning at age 50 is wise.

Symptoms of colorectal cancer can include any of these.

• • A change in bowel habits. It may be constipation, diarrhea, or alternating constipation and diarrhea. Or a change in stool consistency for over two weeks.
  • Stools that are thinner than usual.
  • Rectal bleeding or dark blood. Or stool that is black.
  • Persistent abdominal pain.
  • A sensation that the bowels can’t be emptied completely.
  • Unexplained weight loss.
  • Loss of appette.
  • Nausea or vomiting.
  • Unexplained fatigue.
  • Anemia.
  • Jaundice (yellow skin color or the whites of the eyes).

Having any of these symptoms does not mean that a person has colorectal cancer. But they should be discussed with a doctor.

Drinking in Moderation is Beneficial

Moderate drinking is not a risk factor for colorectal cancer. But  moderate drinking is clearly linked with better health and longer life. That’s compared to either not drinking or drinking heavily.

Drinking in moderation has been described by a federal agency (NIAAA). For a man it’s having two drinks per day. For a woman, it’s one drink per day.

A standard alcoholic drink is any of these.

• • 12-ounce can or bottle of regular beer
  • Five-ounce glass of dinner wine
  • One shot (1.5 ounces) of spirits (liquor).

Standard drinks have the same amount of pure alcohol. It’s six-tenths of an ounce.

There is no evidence that any form of alcohol gives more health benefits. So beer, wine, and spirits are equally helpful.