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Does Alcohol Consumption Affect Weight Loss and Muscle Growth?

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Does Alcohol Consumption Affect Weight Loss and Muscle Growth?

Does alcohol consumption ruin hormone levels, strength, fat loss, and muscle recovery?

 

Alcohol and its relation to health and fitness is a tricky subject.

In small amounts—a drink or two a day—it has potential health benefits like improved insulin sensitivity, cardiac function, and blood lipids (fatty substances in your blood, which when lowered, reduces your risk of heart disease).

In larger amounts, alcohol leads to barely conscious drives home, fistfights over who’s the best NFL rusher of all time, and charges of public indecency. And to nobody’s surprise, chronic alcohol abuse basically just breaks your ass.

But this chapter isn’t about the various effects of mild or severe drinking.

Instead, it will answer a question on many people’s minds: how much alcohol can we drink before it will negatively affect our weight loss and muscle growth?

Alcohol and Weight Loss

alcohol consumption and weight gain

Similar to the carbohydrate inquisition that’s in vogue these days, alcohol is the target of many criticisms. According to some people, if you drink, you’re going to get fat—end of story. And you might just lose all your muscle as a bonus.

Well, if we take a quick look at epidemiological research, we can see that moderate alcohol consumption is actually associated with lower body weight, not higher.

For instance, a study published in 1985 in the American Journal of Clinical Nutrition looked at the diets of 1,944 adults aged 18-74. Researchers found that an increase in calories from ethanol (alcohol) alone didn’t result in the weight gain that would normally occur if those calories were from protein, carbs, or fat.

In fact, thanks to regular alcohol intake, drinkers took in an average of 16% more calories each day than non-drinkers, and had the same levels of physical activity, but weren’t any fatter than their alcohol-free counterparts.

Another study with obese women on a weight loss diet had one group get 10% of daily calories from white wine, and another from grape juice. The result: after 3 months, the white wine group lost about 2 pounds more than the grape juice group.

The exact mechanisms at work aren’t totally clear. A likely factor is drinking can reduce your appetite for food, but it may also be related to its effects on insulin sensitivity.

Now, while it may seem like I’m encouraging you to drink to get shredded, I’m not. Alcohol consumption actually can hinder your weight loss efforts, but in an indirect way.

While alcohol itself basically can’t be stored as body fat, it blocks fat oxidation, which in turn accelerates the rate at which your body stores dietary fat as body fat.

In short, it’s not the calories from alcohol that can make you fat, but all the crap that you eat with it, which is hard to resist when you’re hammered.

So, if you want to be able to drink while dieting and still lose weight, don’t drink more than one day per week, and use the following tips to protect yourself from excess fat storage:

  • Restrict your dietary fat intake that day, and don’t eat any fatty foods while you’re drinking.
  • Get the vast majority of your calories from protein and carbs that day (with most coming from protein).
  • Stay away from carb-laden drinks like beer and fruity stuff. Dry wines are a good choice, as well as spirits.

By following these advices, you can enjoy a few drinks every week without having to feel guilty, and without ruining your weight loss regimen.

Use this workout and flexible dieting program to lose up to 10 pounds of fat and build muscle in just 30 days…without starving yourself or living in the gym.

Alcohol and Testosterone Levels

does alcohol impede muscle growth

Alcohol is going to have to face the music here. It does suppress testosterone levels, but the magnitude of this effect varies.

For instance, a study conducted by the TNO Nutrition and Food Research Institute had 10 men drink 30-40 grams of alcohol per day (2-3 beers or ounces of liquor, or 10-15 ounces of wine). After 3 weeks, their testosterone levels had dropped by about 7% (pretty insignificant).

Another study had 9 men drink 60-70 grams of alcohol after working out, and it had no effects on testosterone levels during the following 5 hours.

What happens when we increase the post-workout dose, though?

The University of Helsinki conducted a similar study, administering 1.5 g ethanol per kg of body weight (!) to 8 healthy men aged 20-26, and found that their testosterone levels dropped by 23% on average between the 10th and 16th hour after they started drinking. Furthermore, cortisol levels were elevated by 36% on average, and growth hormone secretion was heavily suppressed.

Another study conducted by the same university agreed: post-workout binge drinking is bad for testosterone production, proving that 10 beers is a poor post-workout meal (awwww shucks).

So, all things considered, if you have a few drinks here and there, you probably have nothing to worry about in terms of testosterone levels. But doing post-workout protein shots? Not a good idea.

Alcohol and Muscle Recovery and Performance

is alcohol bad for diet

In rat and in vitro studies, alcohol impairs protein synthesis. Some people directly apply that type of research to living, breathing humans and say it prevents you from building muscle and accelerates muscle loss.

Well, it doesn’t work like that. Rats and humans have major metabolic differences, and in vitro findings don’t always pan out in vivo.

In live humans, muscle-wasting effects of alcohol have only been seen in chronic alcoholics. If you have 7+ drinks per day, you’re going to have trouble building muscle. And walking. And remembering your name.

It’s also commonly claimed that alcohol consumption impairs strength and interferes with the body’s ability to repair muscle damage.

According to studies conducted by the University of Massachusetts and Aarhus University, however, alcohol has no effect on strength or indicators of exercise-induced muscle damage.

On the other hand, a study conducted by Massey University showed that 1 g of ethanol per kg of body weight after exercise magnified post-workout muscle damage. It should be noted, however, that the workout regimen used was a bit ridiculous (300 eccentric contractions on a machine for training the legs), so we can’t be sure its findings apply to more traditional, lower-volume weightlifting workouts.

To Drink or Not to Drink?

is alcohol bad for your muscles

Alcohol advocates like to talk it up as some kind of superfood, but the bottom line is it’s not necessary in any way for good health, and it won’t give you any performance benefits.

If you’re like me and don’t drink, I don’t really see any reason  for us to start. If you drink regularly, you have a lot more to worry about than interfering with muscle gainz.

But if you drink infrequently and moderately enough to not notice any after effects (no hangovers or lingering issues), then you probably don’t have any good reason to give it up altogether.

 

What’s your take on drinking and staying fit? Do you abstain completely or keep it moderate? Let me know in the comments below!

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