Does Alcohol Stop Muscle Growth? Effects on Fitness

Medically Reviewed:
Dr. Randy Gelow, MD, FASAM
Ray Hamilton, DNP, PMHNP-BC, FNP-C
Last Updated: April 16, 2025

Building muscle takes more than just lifting weights and eating right it also means avoiding things that can slow down your progress. One common but overlooked factor? Alcohol.

If you’re working toward fitness goals, it’s important to know this: Alcohol can quietly affect how your body grows, recovers, and performs. Let’s look at what really happens when alcohol and fitness mix.

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How Alcohol Affects Muscle Growth?

Alcohol’s impact on muscle growth depends on how much and how often you drink. It’s not just about one night out—it’s about how it slows your body’s recovery and rebuilding process over time.

When it comes to muscle growth, the process of protein synthesis is key. This is how your body repairs and builds muscle after a workout. Drinking alcohol, especially in larger amounts, can reduce protein synthesis, meaning your body won’t recover or build muscle as well as it should.

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Alcohol and Fitness: What Happens to Your Body?

For active individuals, alcohol affects more than just muscle—it impacts overall performance and recovery. After a tough workout, your body needs good sleep, proper nutrition, and time to repair itself. Alcohol can interfere with all of that.

It can also reduce growth hormone levels, which are essential for building and maintaining muscle. Lower hormone levels mean slower recovery, reduced strength, and fewer results over time. Drinking after a workout doesn’t just slow progress—it may even undo some of the work you’ve put in.

Noticing slower recovery or muscle loss? Find out how alcohol affects your muscle gains.

Does Alcohol Stop Muscle Growth?

In high amounts, yes—alcohol can make it harder to gain muscle. It affects protein synthesis, muscle repair, and strength levels. Even moderate drinking, if done regularly, may lead to slower progress, longer recovery, and decreased performance.

Alcohol can also lower testosterone levels, reduce motivation, and impact hydration, all of which are critical for effective workouts. That’s why cutting back or avoiding alcohol around workout days. It can be a game-changer for anyone focused on fitness.

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Long-Term Effects of Alcohol on Muscle Growth

Over time, frequent alcohol consumption can make it even harder to reach your fitness goals. Chronic alcohol use has been linked to a decrease in testosterone, poor nutrient absorption, and loss of lean muscle mass.

Dehydration is another long-term issue. Muscles need water to function, repair, and grow. Even occasional binge drinking can lead to electrolyte imbalances and weakened muscle contractions, making workouts feel harder and less productive.

If you’ve been putting in the work but still see slow results, regular drinking might be the hidden factor holding you back.

How Alcohol Affects Aerobic Performance?

It’s not just about lifting weights—endurance and cardio performance are also affected by alcohol. Drinking can reduce energy levels, increase fatigue, and hurt coordination and reaction time—all of which are important for athletes and runners.

Even moderate alcohol intake before a cardio workout can lead to quicker exhaustion and poor results. For those training for events or trying to improve stamina, alcohol can slow down aerobic gains just as much as strength gains.

Struggling with endurance or stamina? Discover how alcohol impacts your aerobic performance and recovery.

Moving Forward with Your Fitness Goals and Alcohol Consumption

So, does alcohol stop muscle growth? The answer is that alcohol can indeed have a negative impact on muscle growth, particularly when consumed regularly or in large quantities.

Alcohol interferes with important processes like protein synthesis, muscle recovery, and growth hormone production. If you’re serious about building muscle or reaching your fitness goals, it’s crucial to manage your alcohol intake and be mindful of how it affects your body. Reducing alcohol, especially after workouts, will help you stay on track and achieve the results you’re working towards.

Fitness is a long-term journey, and every choice you make—whether it’s related to exercise, nutrition, or alcohol—has a significant impact on reaching your best self. If you’re finding it challenging to stay on track or need additional support, consider reaching out to professionals for guidance. HART Recovery Center provides support programs for those facing challenges with alcohol use, helping you stay focused on your fitness and overall wellness goals without unnecessary setbacks.

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