One of the reasons why we experience worse hangovers when we get older is because we get fatter! Or the lucky ones get thinner, but that makes a difference too. A change of bodyweight in either direction can worsen hangovers. When we weigh more, there’s a wider distribution of your blood alcohol levels so we consume even more alcohol to get the same feeling. So consuming bigger quantities will give you a worse hangover than you’re used to.
If you’ve lost weight, there’s less of that same distribution happening so we get drunker faster. Even though you might end up drinking less, your body is experiencing higher levels of alcohol than it can handle. So your weight really plays a major role in how your body reacts to alcohol, and anyone can experience this change!