A woman can drink alcohol as much as a man but she shouldn’t. Women are more sensitive to alcoholic drinks compared to men. Due to a lighter body weight, a woman can be intoxicated more compared to a man by drinking the same quantity of drink.
Since a woman’s body has more fat than water, the alcohol is diluted to a lesser extent when they drink. Also a man’s stomach has the propensity to secrete more of a chemical called alcohol dehydrogenase that can break down alcohol before it can mix with the blood stream. Also it has been found out that women get habituated to alcohol faster compared to men. A drink which is generally considered moderate for a man (say 2 drinks per day) can be heavy for a woman.