the only 100 percent sure way to prevent a hangover is to abstain from drinking. Since you’re reading an article about hangovers, we’ll assume that’s not your preferred option.
Science may yet provide us with some help in this department. Studies have shown that your brain may react to alcohol in similar ways as it does to gamma-aminobutyric acid (GABA) neurotransmitters. If future research can confirm this, it could lead to new treatments for hangovers or even preventive solutions. In the meantime, here are some tips for lessening the potential for a hangover.
First, to avoid the buildup of chemicals that seem to promote hangover symptoms, you can drink less alcohol overall when you do drink. Drinking within your personal limits for alcohol tolerance is always advised, but of course can be tricky (it’s not always convenient to get details on how much alcohol is in the mixed drink that you just ordered from the bar, for example).
To help prevent dehydration symptoms, try to drink more water than usual whenever you are drinking alcohol, so that your body can try to maintain its normal water balance. To help prevent hangover symptoms generally, studies suggest that drinking more slowly may help, as might drinking after or while eating; a full digestive tract helps to slow alcohol absorption into the body, potentially lessening hangover effects.