Whether you are a happy carouser or a small-time tippler could depend on a hormone produced by your liver that tells your brain to stop boozing
Source:
https://www.newscientist.com/article/mg24833122-300-why-people-enjoy-alcohol-or-are-teetotal-may-come-down-to-a-hormone/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home