Alcohol and your health: How much do you know?

If you drink even occasionally, here’s how alcohol can affect your sleep, heart health, weight and more.

A drink after work or with dinner may help you unwind. But alcohol can affect your health in ways you might not expect. Regular drinking can take a toll on your heart health, sleep and more. Some changes happen right away, while others slowly build over time. Here, answers to common questions about alcohol and your health.

1. Is red wine actually heart-healthy?

You’ve probably heard that a glass of red wine may be “good for your heart.” That idea comes from a compound called resveratrol, an antioxidant found in grape skin.

Some research suggests resveratrol may help reduce:¹

Blood clots
LDL (“Bad”) cholesterol
Inflammation

In theory, this might lower the risk of heart disease. That’s how red wine earned its reputation as being heart healthy. But other studies show resveratrol doesn’t protect against heart disease, and experts say more research is needed.¹

Alcohol can also raise blood pressure and increase the risk of certain heart problems over time, especially with heavier drinking.¹

So, while a small glass of red wine might not be harmful for some people, alcohol shouldn’t be seen as a shortcut to a healthy heart. Safer ways to support your heart include:

Staying active
Eating a heart-healthy diet
Managing stress

2. Can alcohol help you sleep?

It’s easy to think a nightcap will help you sleep better. After all, alcohol can make you feel relaxed or sleepy. But there’s a catch.

Alcohol is a sedative, so it may help you fall asleep faster, but it also reduces REM sleep, the stage that helps your memory and emotional processing.² Less REM means you might wake up feeling tired, even if you spent enough hours in bed.

Drinking before bed can also lead to:²

Waking up more often at night
Lighter, less restful sleep
An increase in snoring or sleep apnea symptoms

For better sleep, experts suggest avoiding alcohol three to four hours before bedtime.²

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3. Can alcohol cause cancer?

It’s easy to think there won’t be any long-term effects of alcohol from a few drinks. But any amount of alcohol can raise your risk for several types of cancer.

These cancers include:³

Breast
Colon
Esophagus
Liver
Mouth
Throat
Voice box

Some studies show that having three or more alcoholic drinks per day can increase your risk of stomach, prostate and pancreatic cancers.³

4. Can alcohol lead to weight gain?

Low-carb beers and 100-calorie seltzers seem to be everywhere. They might seem like a better alternative, but any alcohol consumption can affect your weight.

Your body treats alcohol differently than food. When you drink, your body sees alcohol as something it needs to break down right away.

So instead of burning fat or using other nutrients for energy, your body pauses those processes to focus on alcohol first.⁴

Alcohol also adds extra calories — often called “empty calories” because they don’t provide much nutritional value. So even though it may only be one or two low-calorie seltzers that you’re drinking, it’s still an additional 200 calories that your body doesn’t need.

On top of that, alcohol can: ⁴

Increase your cravings for high-calorie foods
Lower your self-control around food choices

Over time, these effects can make it harder to maintain or lose weight.

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5. Does alcohol metabolism vary from person to person?

Not everyone processes alcohol the same way. Factors like gender and body weight can affect how your body handles alcohol.

Women often reach higher blood alcohol levels than men after drinking the same amount. This is partly due to differences in body size and hormone levels.⁵ People with lower body weight may also feel the effects of alcohol more quickly.⁵

These differences come down to how alcohol is absorbed, metabolized by the liver and distributed throughout the body.

This helps explain why the same amount of alcohol can affect people in very different ways.

It is also one reason why drinking guidelines differ for men and women.⁵ The Dietary Guidelines for Americans defines moderate alcohol use as two drinks or less in a day for men and one drink or less in a day for women.⁶

The guidelines recommend that adults should not drink at all or drink in moderation to reduce some of alcohol’s negative health effects.

6. Can social drinking impact your long-term brain health?

Even low alcohol consumption can have an effect on your health. Alcohol interferes with your brain’s communication pathways and over time, can affect your brain health.

Repeated alcohol use may contribute to:⁷

Slower or altered brain communication
Shifts in mood or behavior
Increased risk of stroke
Heart problems

These effects build up gradually, especially with regular or heavy drinking.

The bottom line: Alcohol affects nearly every part of your body, from your sleep and metabolism to your heart and brain.

Understanding how alcohol works in your body can help you make more informed choices. Even small changes — like drinking less often or avoiding alcohol before bed — can have a positive impact on your overall health.

Curious about how telehealth and virtual care can support your wellness goals? Call 1-844-211-7730 to discuss your options with a licensed insurance agent or browse telehealth plans online.

For informational purposes only. This information is compiled by UnitedHealthcare, and/or one of its affiliates, and does not diagnose problems or recommend specific treatment. Services and medical technologies referenced herein may not be covered under your plan. Please consult directly with your primary care physician if you need medical advice.

Sources:

Mayo Clinic. “Red wine and resveratrol: Good for your heart?” January 20, 2026. Retrieved from https://www.mayoclinic.org/diseases-conditions/heart-disease/in-depth/red-wine/art-20048281
Sleep Foundation. “Alcohol and sleep.” Updated October 23, 2025. Retrieved from https://www.sleepfoundation.org/nutrition/alcohol-and-sleep
Centers for Disease Control and Prevention. “Alcohol and Cancer.” January 29, 2026. Retrieved from https://www.cdc.gov/cancer/risk-factors/alcohol.html
Cleveland Clinic. “Does drinking alcohol prevent you from losing weight?” September 9, 2024. Retrieved from https://health.clevelandclinic.org/does-drinking-alcohol-prevent-you-from-losing-weight
Centers for Disease Control and Prevention. “Alcohol use effects on men's and women's health.” January 31, 2025. Retrieved from https://www.cdc.gov/alcohol/about-alcohol-use/alcohol-and-sex-considerations.html
Centers for Disease Control and Prevention. “About Moderate Alcohol Use.” January 14, 2025. Retrieved from https://www.cdc.gov/alcohol/about-alcohol-use/moderate-alcohol-use.html
National Institute on Alcohol Abuse and Alcoholism. “Alcohol's effects on the body.” Updated June 2025. Retrieved from https://www.niaaa.nih.gov/alcohols-effects-health/alcohols-effects-body