Yes, most people with diabetes can drink alcohol, but it carries specific risks that matter

Alcohol itself does not contain sugar, so a glass of wine or spirits will not spike your blood sugar the way a soda would. But alcohol affects your body in ways that make blood sugar harder to predict and control. It slows how your liver releases glucose, can cause low blood sugar hours after you drink, and interacts with diabetes medications. The safety of drinking depends on what type of diabetes you have, what medications you take, how much you drink, and whether you eat while drinking.

If your doctor has told you not to drink, follow that advice—some people with diabetes should not drink at all. For others, moderate drinking with the right precautions is possible. The key is understanding how alcohol moves through your body and what to watch for.

Key Takeaways

  • Alcohol slows your liver's ability to release glucose, which can cause dangerously low blood sugar several hours after drinking.
  • Beer and sweet wines contain carbohydrates that will raise blood sugar, while dry wines and spirits have minimal carbs but still carry the low-blood-sugar risk.
  • Never drink on an empty stomach, and always tell people you are with that you have diabetes in case they need to recognize low blood sugar symptoms.
  • Some diabetes medications, particularly insulin and sulfonylureas, increase the risk of low blood sugar when combined with alcohol.
  • Moderate drinking means up to one drink per day for women and up to two for men, according to standard health guidelines.

How alcohol affects blood sugar and your liver

Your liver does two main jobs: it stores glucose and releases it into your bloodstream when your blood sugar drops. When you drink alcohol, your liver prioritizes breaking down the alcohol instead. This means it stops releasing glucose at the moment your body needs it most—which is exactly when your blood sugar is falling.

This lag can happen hours after you finish drinking, sometimes while you sleep. You might feel fine when you go to bed, then wake up with dangerously low blood sugar. This is why people with diabetes who drink are at higher risk of severe hypoglycemia (very low blood sugar) than people without diabetes who drink the same amount.

The risk is higher if you drink without eating, drink heavily, or drink regularly. It is also higher if you take insulin or certain oral medications that lower blood sugar on their own.

Different drinks affect blood sugar differently

The type of alcohol matters because different drinks contain different amounts of carbohydrates. Beer typically has 10 to 20 grams of carbs per 12-ounce serving. Sweet wines and dessert wines can have 10 to 30 grams per 5-ounce glass. Dry wines have 1 to 5 grams per glass. Spirits like vodka, gin, and whiskey have essentially zero carbs, but they are often mixed with sugary drinks.

This means beer and sweet wine will raise your blood sugar, while dry wine and straight spirits will not—but all of them carry the low-blood-sugar risk from the liver effect described above. If you choose spirits, mix them with sugar-free options like soda water, diet cola, or unsweetened tea rather than juice or regular soda.

A standard drink is 12 ounces of beer, 5 ounces of wine, or 1.5 ounces of spirits. Knowing this helps you count carbs and understand your risk.

Medications that increase your risk when combined with alcohol

Some diabetes medications make low blood sugar more likely on their own, and alcohol makes that risk worse. Insulin and sulfonylureas (medications like glyburide and glipizide) both lower blood sugar directly. When you add alcohol, which also lowers blood sugar through the liver effect, the combination is risky.

Metformin, the most commonly prescribed diabetes medication, does not cause low blood sugar by itself, so the risk is lower—but the liver effect still applies. GLP-1 agonists (like semaglutide) and SGLT2 inhibitors carry their own risks with alcohol that your doctor should discuss with you.

Ask your doctor or pharmacist specifically whether your medication makes low blood sugar more likely. If it does, you have more reason to be cautious with alcohol.

Steps to take if you choose to drink

Never drink on an empty stomach. Eat a meal or substantial snack with carbohydrates and protein before or while you drink. The food slows alcohol absorption and gives your body glucose to work with while your liver is busy processing the alcohol.

Check your blood sugar before drinking and again a few hours after you finish. If you take insulin, you may need to reduce your dose on days you drink—talk to your doctor about this beforehand, not the night you want to have a drink.

Limit yourself to moderate amounts: up to one drink per day for women, up to two for men. Drink slowly and space drinks out over time. Tell the people you are with that you have diabetes, so they can recognize low blood sugar symptoms (shakiness, sweating, confusion, slurred speech) if they happen.

Wear a medical ID bracelet or necklace. If you become confused or unresponsive from low blood sugar, people around you need to know it is a medical emergency, not intoxication.

When you should not drink at all

Some people with diabetes should avoid alcohol completely. This includes anyone whose doctor has advised against it, anyone with a history of alcohol misuse, and anyone with certain complications like severe neuropathy or kidney disease. Pregnancy is another reason to avoid alcohol entirely.

If you have had trouble recognizing low blood sugar symptoms in the past (a condition called hypoglycemia unawareness), alcohol makes that problem worse and is not safe for you. The same applies if you have had severe low blood sugar episodes that required someone else to help you.

Talk honestly with your doctor about your drinking habits and your medical history. They can tell you whether alcohol is safe for your specific situation.

Frequently Asked Questions

Can I drink if I take metformin?

Metformin does not cause low blood sugar by itself, so the risk is lower than with insulin or sulfonylureas. However, alcohol still slows your liver's glucose release, so the same precautions apply: eat first, check your blood sugar, and drink moderately. Ask your doctor whether your specific situation has other factors that change this.

What should I do if my blood sugar drops while I am drinking?

Treat it the same way you would any other low blood sugar: consume 15 grams of fast-acting carbohydrates (juice, glucose tablets, or regular soda), wait 15 minutes, and check your blood sugar again. Do not rely on alcohol to treat low blood sugar—it will make the problem worse. Stop drinking for the rest of the night.

Is wine safer than beer or spirits?

Dry wine is safer than beer or sweet wine because it has fewer carbs, but all types carry the low-blood-sugar risk from how alcohol affects your liver. The safest choice depends on your medications and how your body responds, not on the type of drink alone.

Can I drink if I use a continuous glucose monitor?

A continuous glucose monitor (CGM) gives you real-time information about your blood sugar trends, which is helpful when drinking. You can see whether your blood sugar is dropping and catch low blood sugar earlier. However, a CGM does not change the underlying risks—you still need to eat first, drink moderately, and tell people around you that you have diabetes.