As your blood alcohol concentration rises, it affects new and different neuromodulators too. And each one will have its own specific influences in different parts of the brain. There are three that are the most important. Firstly, a rising blood alcohol level increases the effects of serotonin, a mood enhancer that also makes you more empathetic. Its pro-serotonin effect is also what makes other people seem more attractive – so-called ‘beer goggles’. In that way, it has a similar effect to MDMA or ecstasy. It’s the stimulation of a different serotonin receptor, one in the nerves of the
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