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By the Numbers:

In the wake of a recent study from Johns Hopkins MedicalCenter recommending that caffeine withdrawal be classified as amental disorder, this installment of By the Numbers takes a look atcaffeine consumption -- and non-consumption.

 

1 Caffeine's rank on the worldwide list of "most commonlyused stimulants"

3.4 Cups of coffee drunk daily by the average Americancoffee drinker, according to the National CoffeeAssociation

1 Cups of coffee drunk each day that "can result incaffeine addiction," according to a new study done by Johns HopkinsMedical Center

170 Years of caffeine-related research aggregated in thatstudy

50% Portion of people going through caffeine withdrawalwho experience headaches

13% Portion of people going through caffeine withdrawalwho experience "clinically significant distress or impairment offunction"

2 Minimum length, in days, of caffeinewithdrawal

9 Maximum length, in days, of caffeine withdrawal

250 Milligrams of caffeine that, if drunk in "a very shortperiod," may prompt "nausea, headaches, tense muscles, sleepdisturbances and irregular heartbeats"

75-200 Milligrams of caffeine in one cup of coffee

30-50 Milligrams of caffeine in 12 ounces ofcola

750+ Milligrams of caffeine that may prompt "delirium,light flashes and ringing ears"

10 Grams of caffeine necessary to kill the average person

100 Number of espresso shots that would have to be quicklytaken to reach that fatal point

15 Minutes after the first sip of a caffeinated drinkuntil all your body's cells have absorbed the caffeine

600 billion Cups of coffee consumed worldwide eachyear

15% Portion of Americans who have stopped using caffeinedue to its negative health effects

The information cited above comes from the Seattle Times,USA Today, the Washington Times, Health24.com, student.com,coffeefaq.com, and Science World.