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C1Difficulty 2/5

If a man and woman of the same weight drink the same amount of alcohol under comparable conditions, can biological differences in body composition affect blood-alcohol concentration?

Correct answer

Yes; in general, the woman may reach a higher concentration under those conditions.

Yes. Alcohol distributes mainly in body water; at equal weight, women generally have a lower proportion of body water and may reach a higher blood-alcohol concentration after the same amount of alcohol. This is a general tendency, not an exact prediction for each person. Food, elapsed time, amount and pace of drinking, and other individual factors also matter. Do not use this comparison to calculate how much you can drink before driving.

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All options

  • No; equal weight guarantees identical blood-alcohol concentration in both people.

  • Yes; in general, the woman may reach a higher concentration under those conditions.

  • Yes; under those conditions, the man always reaches a higher concentration.

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