Worldwide, 120,000 tons of caffeine are consumed each year
The highest coffee consuming countries are Finland, Sweden, Denmark, Norway and Belgium.
The average daily consumption of caffeine among adults is 200 mg/day in the United States and Canada and more than 400 mg/day in Sweden and Finland.
Women metabolize caffeine about 25% faster than men
Why drink coffee?! (most popular source)
- Need for a stimulant
- Preference for coffee
- Knowledge for coffee
Non-coffee drinkers even get plenty of caffeine: former coffee drinkers get about 107 mg per day and people who have never had coffee get about 91 mg per day

Amaranath, D.; Han, S.