The Great Beer Debate: Is Drinking Beer Good for Weight Loss?

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Discussion Overview

The discussion revolves around the question of whether drinking beer can contribute to weight loss, examining the energy dynamics involved when consuming cold beer and its caloric content. Participants explore the biological and mathematical aspects of energy expenditure versus caloric intake, engaging in both theoretical and practical reasoning.

Discussion Character

  • Exploratory
  • Technical explanation
  • Mathematical reasoning
  • Debate/contested

Main Points Raised

  • One participant suggests that the energy required to raise the temperature of cold beer is greater than its caloric content, questioning why this does not lead to weight loss.
  • Another participant counters that not all beer is expelled from the body, as most carbohydrates and alcohol are absorbed, leading to a net caloric gain.
  • A different viewpoint emphasizes that the body's temperature regulation minimizes the energy expenditure needed to counteract the cooling effect of the beer, suggesting that the calories consumed exceed those expended.
  • One participant provides a mathematical calculation showing the energy required to raise the temperature of a 12-ounce beer, arguing that the biological regulation of body temperature means this energy does not contribute to weight loss.
  • Another participant elaborates on the definition of dietary calories and compares the energy needed to warm beer to its caloric content, indicating that the energy required is still less than the calories provided by the beer itself.

Areas of Agreement / Disagreement

Participants express differing views on the relationship between the energy required to warm beer and its caloric content, with no consensus reached on whether drinking beer can lead to weight loss. Multiple competing explanations and models are presented.

Contextual Notes

Some assumptions about energy expenditure and caloric absorption are not fully explored, and the discussion includes varying interpretations of dietary calories and their implications for weight management.

joejoeko
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When you drink a beer, it enters you cold, and leaves you warm. If you were to find the amount of energy required to raise the temperature of the beer, assuming that the energy is provided by yourself, you would find it to be greater than the caloric content of beer. If this is true (and it is), why doesn't drinking beer make you lose weight?

Well, i can't figure it out and I'm not sure the answer isn't just some trick involving a misleading problem statement or something, what do you guys think?


-JJKO
 
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1) Not all the beer leaves you. You absorb most of the carbs and alcohol.

2) Your body temperature is already what it is. The calories have already been expended to get it there. So when the cold beer enters your body, it starts absorbing heat rapidly. The proportional temperature-lowering effect on your much more massive body is minimal, and requires hardly any new calories to be expended to counteract it and keep your temp stable.

so 3) you consume way more calories than are expended, and (skipping a afew steps) you gain weight.
 
Let's start with some math:

Take a 12 ounce beer (355ml) and raise it's temperature from 2C to 37C. That's 12*355*35=107,100 calories.

Now a typical light beer has on the order of 100 calories - which really is 100,000 calories. A difference of 7,100.

But, the reason why that doesn't help you is biological. Your body regulates it's own internal temperature, and that energy just gets incorporated into the temperature regulation. The body doesn't need to cool itself so much, so it decreases the blood flow to your extremeties a little and there is no difference in energy production.

Things change, of course, if having a couple of beers causes you to dance...
 
joejoeko said:
When you drink a beer, it enters you cold, and leaves you warm. If you were to find the amount of energy required to raise the temperature of the beer, assuming that the energy is provided by yourself, you would find it to be greater than the caloric content of beer. If this is true (and it is), why doesn't drinking beer make you lose weight?
Well, i can't figure it out and I'm not sure the answer isn't just some trick involving a misleading problem statement or something, what do you guys think?
-JJKO

The dietary "calorie" is one kilocalorie, the heat necessary to raise one kilogram of water (or liter of beer) one degreee on the Kelvin or Celsius scale. Thirty dietary calories should bring a liter of beer from most serving temperatures up to body temperature --- same liter contains 30 g ethanol (a really light beer), which yield 10-15 kcal/g, 10-15 dietary cal/g. Let's go ahead and use the CHO dietary calorie for sugars from my Coke bottle, 4 cal/g --- still 4 times the energy necessary to bring the beer up to body temperature.
 

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