January 26, 2026

Research indicates that drinking alcohol is a risk factor for several cancers and, like smoking, is a lifestyle choice.

Unlike cigarettes, which are universally harmful, alcohol is woven into cultural traditions, religious ceremonies and social rituals around the world. Alcohol also stands apart because its risks vary depending on genetics and consumption patterns. For people with a strong family history of cancer or genetic vulnerabilities, even moderate drinking may carry higher risks. This makes health care conversations about alcohol risk more personalized.

Panagis Galiatsatos, a pulmonary and critical care medicine physician specializing in tobacco cessation and cancer care, discusses the link between alcohol and cancer. “As we go through this, you’ll understand that this isn’t as black and white as the cigarette,” he stresses.

How can alcohol cause cancer?

Researchers have identified the biological mechanisms that explain why alcohol increases cancer risk. These apply to all types of alcoholic beverages: beer, wine and spirits.

When you have an alcoholic drink, which is made of a molecule called ethanol, your liver breaks down the ethanol into acetaldehyde, a toxic chemical and known carcinogen. Acetaldehyde can:

• Damage DNA.
• Interfere with DNA repair.
• Bind to proteins and disrupt normal cell function.

Alcohol can also increase cancer risks by:

• Causing inflammation.
• Disrupting hormone balance (including raising estrogen levels linked to higher breast cancer risk).
• Weakening the cells in your mouth and throat, making them more susceptible to carcinogens, especially when paired with smoking cigarettes.

What are the recommended guidelines for alcohol consumption?

Not everyone who consumes alcohol will develop cancer. Cutting back on alcohol lowers your chances of getting these cancers, because the risk begins to rise even with small amounts of drinking.

The recommended amount of alcohol is no more than 14 grams of ethanol per day, which is roughly one can of beer, one glass of wine, or 1½ ounces of spirits. For those who wish to consume alcohol, the tally restarts daily; there is no “saving up” for the weekend.

Is any amount of alcohol safe?

You may have heard that a glass of red wine is good for you. However, the World Health Organization states that no level of alcohol consumption is completely safe. Some researchers argue that the “no safe amount” message can oversimplify things, because risks vary by age, health, genetics and lifestyle.

So, what’s right for you? Talk to your doctor about your personal risk factors, and make a plan that best fits your lifestyle and health goals. “At some point, you have to weigh the risks and balance, because maybe some level of wine would be acceptable, depending on the celebration,” explains Galiasatos. “But at the end of the day, if you’re not able to remove alcohol completely, can you keep it to the lowest level you can consume in a day? This would help lessen risk of cancer.”

What types of cancer can alcohol cause?

Alcohol is linked to seven specific cancers:

• oral (mouth)
• esophagus
• liver
• breast
• colorectal

Tips for Lowering Alcohol Consumption

Start with small, manageable changes, and celebrate your successes.

• Set a clear goal, such as “I’ll have no more than X drinks per week.”
• Track your drinking using a notes app or journal. Seeing patterns makes it easier to adjust.

• Have alternatives ready:
• sparkling water
• flavored nonalcoholic seltzers
• mocktails
• tea

• Identify moments when you drink out of routine (after work, while cooking, social pressure), and replace the trigger with something else: a walk, a snack, a podcast or a quick break.

• Tell a couple of people you trust that you’re cutting back.

• Keep less (or no) alcohol at home.
• Focus on how you feel: better sleep, clearer mornings and less anxiety.

If Reducing Alcohol Feels Harder Than Expected

Cutting back can be surprisingly emotional or challenging. If you ever feel stuck, overwhelmed or worried about your drinking, talking with a doctor or counselor can make a huge difference.

Alcohol’s role in society means that eliminating it entirely isn’t realistic or necessary for everyone. But understanding the risks empowers people to make choices aligned with their health goals.

Medically reviewed by Panagis Galiatsatos, M.D., M.H.S.