(WPRI) — Tobacco, obesity and sun exposure are the risk factors we've been told time and time again can cause cancer, but something many people put in their bodies on a weekly basis is also on that list: alcohol. According to the latest Cancer Progress Report released in September by the American Association for Cancer Research, 5.4% of cancers were attributed to alcohol consumption. Studies have shown excessive drinking increases the risk for at least six different cancers. Alcohol consumptionIncreased risk for... Any alcoholic drinksMouth, pharynx, and larynx cancerEsophageal cancer (squamous cell carcinoma)Breast cancerTwo or more drinks a dayColorectal cancerThree or more drinks a dayStomach cancerLiver cancerData: American Association for Cancer Research, World Cancer Research Fund International Dr. Hina Khan, a medical oncologist who specializes in thoracic cancers at Lifespan, joined us in the 12 News studio to talk about the report. "In the study, it was noted that the risk of oral and esophageal cancers was increased fivefold in heavy alcohol intake patients. Similarly, with breast cancer and liver cancer, the risk was increased almost 1.5-fold compared to people who never drink," Dr. Khan said. "We all know how common breast cancer is, and to know that alcohol increases that risk is very concerning." Also concerning: A recent survey by The Ohio State University Comprehensive Cancer Center found 51% of Americans didn't know that drinking alcohol increases the risk for certain types of cancer. That's why the Cancer Progress Report's authors are pushing for cancer-specific warning labels displayed on alcohol bottles, similar to what you see on a cigarette pack. "Alcohol is considered a Group 1 Carcinogen by the International Agency of Research on Cancer," Dr. Khan said, "which means there is sufficient scientific evidence to prove the carcinogenic effect." ALSO READ: What are the signs and types of gynecologic cancer? Dr. Khan explained that the chemicals in alcohol can cause the breakdown of DNA and protein in your body. It's also been linked to increased production of several hormones, including estrogen, which has in turn been linked to increased breast cancer risk. For Dr. Khan, the answer is obvious: "Based on the studies, there really isn't any safe amount of alcohol consumption." However, she recognizes that not drinking at all is tough for a lot of people, especially socially. She said when it comes to your cancer risk, the less you drink, the better. The American Cancer Society recommends that people who choose to drink alcohol limit their intake to no more than two drinks per day for men and no more than one drink per day for women. Close Thanks for signing up! Watch for us in your inbox. Subscribe Now Daily Roundup SIGN UP NOW