You’re out with friends enjoying a few holiday cocktails when you suddenly feel lightheaded and need to sit down. You might not realize it, but you’re experiencing the effects of alcohol on your vascular system.
In addition to being a depressant, alcohol dilates the blood vessels. So, when you’re standing at a party or social setting, blood often pools in the vessels in your feet instead of being pumped back to the heart.
The result can be feelings of lightheadedness, nausea and over-heating (known as pre-syncope), which are exacerbated by alcohol. To prevent these symptoms, minimize alcohol intake and move around to encourage blood flow to the heart, thus reducing your chances of passing out entirely.