The most-consumed drug on earth, metabolised at wildly different speeds.
Why this topic Energy drinks are the fastest-growing thing people put in their bodies.
Counted in Europe PMC, where the title or abstract names both this topic and that rsID. The number is papers, not evidence of a cause.
CYP1A2
Caffeine metabolism
42 papers →ALDH2
Alcohol flush reaction
3 papers →MC1R
Hair color
2 papers →FTO
Obesity
1 paper →GIPR
Obesity
1 paper →Europe PMC, title and abstract only, searched for “caffeine consumption”, “caffeine metabolism”, “coffee consumption” alongside each published rsID. Full text was not counted: it returns every paper with an rsID buried in a supplementary table. Recounted monthly.