In short, it would take at least
six gallons of McDonald's coffee. In April, a coroner's report cited a
New Zealand woman's consumption of Coca-Cola as being related to her
death. But she reportedly had a number of other unhealthy habits,
including smoking cigarettes and a poor diet.
But as Popular Science notes,
individual reactions to caffeine intake vary from person to person and
are heavily influenced by a number of other factors, including related
health issues and the consumption of other substances, such as alcohol.
The Journal of Caffeine Research
editor-in-chief Jack James tells PopSci that it takes "about" 10 grams
of caffeine to achieve lethal levels. According to the Mayo Clinic, the
average adult can safely consume 200 mg to 300 mg of caffeine per day,
the equivalent of about 2 to 4 cups of coffee.
However, consuming more
than 500 mg per day can begin to trigger side effects, including
insomnia, fast heartbeat and muscle tremors.
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