PDA

View Full Version : Beer's Macros/Calories



TheRealDeal930
03-30-2013, 11:02 PM
This may be off topic but, how is it possible for beer to have 0fat 12.8 carbs and 0protein and be 144 calories?

http://www.pabstblueribbon.com/beer.php

tom183
03-31-2013, 02:16 AM
Alcohol is 7 calories per gram.

TheRealDeal930
03-31-2013, 04:32 PM
Alcohol is 7 calories per gram.

I was under the impression that a calorie could only be a fat, carbohydrate, or protein. Is alcohol "technically" a carbohydrate and they just don't count it as such in this case

Alex.V
03-31-2013, 08:37 PM
I was under the impression that a calorie could only be a fat, carbohydrate, or protein. Is alcohol "technically" a carbohydrate and they just don't count it as such in this case

No, incorrect. ANY compound that provides energy technically is a source of Calories in the body. "Calorie" is a unit of energy. 1 Calorie (technically kilocalorie) is 4,184 Joules. Technically, assuming we could digest it (and convert it into pyruvate- those energy pathways are considered our "engines"), gasoline would have about ten Calories per gram.

So alcohol is not a carbohydrate. It is alcohol.

Jonathan E
03-31-2013, 10:06 PM
Technically, assuming we could digest it (and convert it into pyruvate- those energy pathways are considered our "engines"), gasoline would have about ten Calories per gram.

Well dammit...talk about a missed bulking opportunity !

synonymous
03-31-2013, 11:24 PM
So if someone drinks alcohol, and I think this may have been discussed, but how does it prevent those from gaining or losing weight? Is it just empty calories? Trade your rice or potatoes and have beer with steak or another high protein source? Or is there more to it?

Alex.V
04-01-2013, 08:58 AM
Well dammit...talk about a missed bulking opportunity !

Right? Can picture the scene at the gas station- buncha bodybuilders continually getting chased away from the pumps. "You! There! Get that out of your mouth!"

synonymous- it doesn't really prevent weight loss or gain. Technically, there's no such thing as an empty calorie. Granted, it has few other nutrients to it, but like carbohydrates, deaminated proteins, or fats, alcohol is broken down by the body into Acetyl CoA, at which point it enters the citric acid cycle much like any other nutrient. At this point, the body doesn't care WHERE the Acetyl CoA came from.

The one caveat here is that the body cannot store alcohol on its own without this conversion, and will preferentially use free Acetyl CoA versus generating more from stores. This means that if you've just pounded a bunch of booze, your body isn't too likely to be breaking down much fat at that time, since it has all the energy substrates it needs while metabolizing the alcohol. As you mentioned, this is a bit like what will happen with easily broken down carbs- if you yank out some carbs with your meal and replace with alcohol, the net impact will be pretty similar.

Then again, if you overconsume alcohol, and the body doesn't need all the Acetyl CoA, this is then repackaged and stored however the body sees fit. I generally don't worry too much about replacement of calorie sources- then again, I'm not much of a believer in meal timing having an impact on eventual body composition. If you're really worried about it, then yep, sub carbs for alcohol to make the calories match.

There's also a VERY transient effect that people talk about, where alcohol consumption temporarily reduces systemic protein synthesis, but quite frankly, I have NEVER noticed this doing a damn thing to anybody's gains, unless you're talking about people who binge drink every night.

tom183
04-01-2013, 05:44 PM
Relevant article:

http://www.leangains.com/2010/07/truth-about-alcohol-fat-loss-and-muscle.html