““Alcohol is the great impersonator, fooling at least four different receptor molecules. In a quick survey of the functions of these victims, we can see exactly how alcohol works its magic. 1. It slows us down, “relaxing” our neurons. By blocking receptors for our brains’ chief excitatory neurotransmitters, alcohol coats the brain in a bit of molasses, slowing reaction times and slurring speech. We could probably do without this effect. 2. It gives us a pleasant buzz. Acting like cocaine —but much weaker —alcohol blocks dopamine reuptake, increasing the concentration of the happy neurotransmitter in the key parts of our brains. 3. It blocks pain. By stimulating the release of endorphins, alcohol lets us sample the “runner’s high” without even putting on our running shoes. Resembling morphine and heroin in this respect, but again at a greatly reduced magnitude, alcohol spurs our body to produce a little opiate-like high. 4. Alcohol makes us happier, at least while it’s in our system. Like a “do-it-yourself Prozac kit,” alcohol modifies and increases the efficiency of our serotonin receptors.””
