Based on the results of impartial experimental studies, dieticians agree that moderate consumption of beer (approximately 0.5 L per day for men and slightly less for women) reduces the risk of cardiovascular disease and offers a wide range of health benefits. However, under certain circumstances the consumption of alcoholic beverages should be avoided; for example while pregnant or taking particular medications, alcohol should not be consumed.
The legal limit of alcohol in the blood (0.5 parts per thousand in Italy) should also be kept in mind when driving. An easy, though approximate, way to calculate one’s blood alcohol level follows.
Suppose a person weighing 75 kg drinks a bottle of beer (1/3 L) ccontaining 4.0% alcohol by volume (the alcohol content is listed on the label).
Multiply the alcohol content by 10:
4,0 x 10 = 40
Then divide this number by the person’s weight to obtain the blood alcohol level when 1 L of beer is consumed:
40/75 = 0,53
The “alcohol level for 1 L of beer consumed” must be adjusted to match the actual quantity of beer consumed, in this case 1/3 L, so the blood alcohol level 0,53 /3 = 0,18 parts per thousand.