Sex matters

Sorry ladies, but you can’t drink as much as men.  That’s not a male conspiracy theory but a biological fact!  Women have less body water than men so the concentration of alcohol (BAC) in their blood stream is proportionally higher. So, if  a woman weighing 60 kilograms drinks a double gin then a man of the same size will need to drink a triple gin in order to reach the same blood alcohol level.

There is some evidence that women may have smaller amounts of the enzyme ADH (which is responsible for breaking down alcohol in the liver and in the lining of the stomach) and this might contribute to their higher BAC levels.