What Alcohol Does to Your Brain | Dr. Andrew Huberman
“Intoxication occurs when alcohol intake exceeds your body’s ability to metabolize alcohol and break it down,” states Jeffrey T. Johnson, DO, Northwestern Medicine Regional Medical Group board-certified specialist in addiction medicine.Subliminal intoxication. With a blood alcohol content (BAC) between 0.01 – 0.05, this is the first stage of intoxication. You may not look like you have been drinking, but your reaction time, behavior and judgment may be slightly altered. Depending on weight, most men and women enter this stage after one drink.
Euphoria. During the early stages of drinking, your brain releases more dopamine. This chemical is linked with pleasure. During euphoria, you may feel relaxed and confident. But, your reasoning and memory may be slightly impaired. Often referred to as “tipsy,” this stage occurs when your BAC is between 0.03 and 0.12.
Excitement. At this stage, with a BAC from 0.09 to 0.25, you are now legally intoxicated. This level of intoxication affects the occipital lobe, temporal lobe and frontal lobe in your brain. Drinking too much can cause side effects specific to each lobe’s role, including blurred vision, slurred speech and hearing, and lack of control, respectively. The parietal lobe, which processes sensory information, is also affected. You may have a loss of fine motor skills and a slower reaction time. This stage is often marked by mood swings, impaired judgment, and even nausea or vomiting.