Am I Drunk, Hungry, Or Both? Alcohol As An Appetite Stimulant (Skeptical Inquirer)

8 minute read

If you’ve never gotten fast food after leaving a bar late at night (or, more correctly, early in the morning) I’d highly recommend it. I’ve never been sure if it’s the intoxication, the tiredness, or the unusual hour that makes post-pub falafel taste like heaven, but somehow after I go out drinking with my lab mates the food always just is better. I had resigned myself to the mysterious joy of 2 a.m. poutine remaining just that, a mystery. But last Christmas my grandfather took me by the shoulders and with odd earnest asked me to write an article finding out if alcohol is an appetite stimulant. Well, Grandpa, it may have taken seven months, but here it is! Let’s take a look at the evidence for alcohol as an appetite stimulant.

Read the entire article here: https://skepticalinquirer.org/exclusive/am-i-drunk-hungry-or-both-alcohol-as-an-appetite-stimulant/

The Truth Behind “Beer Before Liquor”

2 minute read
Originally posted here: https://mcgill.ca/oss/article/did-you-know-health/beer-liquor

Have you ever heard the saying “beer before liquor never been sicker”? Or “liquor before beer, you’re in the clear”? What about “grape or grain but never the twain”? Well, it turns out that there might be some truth to at least some of these adages.

There are a few factors to consider here.

First, there’s the absolute volume of alcohol you are consuming. Looking at the Manhattan as our example cocktail, it contains roughly 28% alcohol by volume (ABV), which makes it seem much less potent than, say, straight whiskey, with its ABV of 40%. But it’s not really fair to compare these drinks on their ABVs since the amounts consumed tend to be different.

What matters isn’t the ABV of a drink, but the true amount of pure alcohol (ethanol) in a drink. In the chart below you can see a comparison of drinks’ ABVs, volumes, and actual amounts of ethanol.

DrinkABV (%)Volume of
1 Drink
(mL)
Absolute Amount of
Alcohol in 1 Drink (oz)
Beer63550.72
Wine121500.6
Manhattan281401.31
Bloody Mary122200.9
Straight vodka40450.6

So you can see that, even though we tend to consider one glass of wine, cocktail, or can of beer equal to “one drink”, the actual amount of alcohol you’re consuming can vary wildly by what kind of drink you are having.

The volume difference in drinks also influences how quickly we drink them. A beer tends to take longer to drink than a cocktail, or especially a shot, simply because it’s much larger. Purely based on volume, you could drink 2.5 Manhattans in the time it takes to drink one bottle of beer. So, by drinking beer, you essentially give yourself a lower alcohol per minute rate of consumption than when drinking cocktails.

If your options are only to drink cocktails and then beer, or beer and then cocktails, it makes sense to keep your heavier drinking for the beginning of your night. When you’re more sober you’ll be better able to pace yourself, evaluate how you’re feeling, and make changes to your rate of consumption if need be. Later in the evening, when your decision-making process is already compromised, beer is a safer option that won’t contribute as much to making you more intoxicated.

There is however another factor at play here: how well your body absorbs alcohol in different preparations. A 2007 study found that the vodka served diluted (with carbonated or still water) was absorbed faster than the vodka served neat. This means that even if the same amount of time is taken to drink straight liquor or a glass of wine (two drinks which contain about the same absolute amount of alcohol) the wine still may leave you more intoxicated, as it is better absorbed into your blood.

As for the grape or grain advice? Feel free to ignore it. A 2019 study compared the hangover severities of subjects who drank only beer, only wine, beer and then wine, or wine and then beer, and found that “neither type nor order of consumed alcoholic beverages significantly affected hangover intensity.”

From Bottle to Blood to Breath: How Breathalyzers Work

Originally posted: https://mcgill.ca/oss/article/did-you-know/did-you-know-breathalyzers-dont-directly-measure-your-blood-alcohol-concentration

The term “alcohol” to a chemist  means an organic compound that contains an OH group, but as far as the public is concerned “alcohol” refers to one specific compound, namely, ethanol. It is ethanol that we consume in wine or beer, and when we measure blood alcohol content (BAC), we’re really measuring blood ethanol content.

Breath analyzers (Breathalyzer is a brand name) contain an anode (negatively charged electrode) and a cathode (positively charged electrode). When you blow into a breathalyzer, the ethanol in your breath reacts with water from the air at the anode and is oxidized to form acetic acid (like in vinegar).

Meanwhile, at the cathode, oxygen from the atmosphere is reduced to form water. These two coupled reactions produce an electrical current between the electrodes that’s proportional to the amount of ethanol present in your breath. So, breathalyzers don’t truly measure blood alcohol content (which can only be done with a blood test) but estimate it based on the ethanol in your breath.

There are a few situations in which a breathalyzer may fail to measure BAC accurately. Notably, individuals with higher-than-normal levels of acetone in their breath may have it detected as ethanol. This could include diabetics, those on fasting diets, or those adhering to a ketogenic diet. There are a few other substances that could interfere with the chemistry of a breathalyzer, but not ones that you’re too likely to have in your bloodstream, thankfully.