Alcohol: what Canada's guidance actually says now

In 2023 the Canadian Centre on Substance Use and Addiction published new guidance that replaced the older weekly limits many people still have in mind. The change was significant enough that it is worth knowing what it actually says rather than what it was reported to say.

The continuum

Rather than a single safe limit, the guidance describes risk rising steadily with the number of standard drinks per week:

• 0 drinks — no risk from alcohol, and benefits for anyone cutting down.
• 1 to 2 drinks a week — likely to avoid alcohol-related consequences for most people.
• 3 to 6 drinks a week — increasing risk, notably of breast and colon cancer.
• 7 or more — risk of heart disease and stroke rises steeply, and continues to climb with each additional drink.

A standard drink in Canada is smaller than most people pour: roughly 341 ml of 5% beer, 142 ml of 12% wine, or 43 ml of 40% spirits. A generous glass of wine at home is often closer to two.

What changed, and why

The older idea that a moderate amount of alcohol protects the heart has not held up well. Much of that earlier evidence compared drinkers with non-drinkers who included people who had stopped because they were unwell. Better-designed studies have steadily weakened the apparent benefit, while evidence on alcohol and cancer has strengthened. Alcohol is classified as a carcinogen, and the risk for several cancers begins at low levels of drinking.

Practical, without being preachy

• Count in standard drinks, not glasses. Most people underestimate by a wide margin.
• Any reduction helps. The guidance is explicitly not abstinence-or-nothing — moving from six drinks to three is a real gain.
• Set drink-free days in the week. Easier to keep than a per-occasion rule.
• No amount is safe in pregnancy, or before driving and operating machinery.

If cutting down is hard

Finding it difficult to stop once you start, or needing alcohol to feel normal, is worth talking about with a professional. ConnexOntario offers free, confidential information and referral at 1-866-531-2600, at any hour. Withdrawal from heavy, daily drinking can be medically dangerous, so do not stop abruptly on your own — ask a doctor how to do it safely.

Sources

• Canadian Centre on Substance Use and Addiction — Canada's Guidance on Alcohol and Health
• Canadian Cancer Society — Alcohol and cancer risk
• Health Canada — Alcohol