What's the amount of coffee per day do we need to drink? I study whole day so I feel coffee addicted while studying so can any one answer me?
Prevailing wisdom is that it is generally safe to drink up to 4 cups of coffee per day. Caffeine is the world's most widely consumed psychoactive drug (stimulant) and typical consumption is alleged to have a number of positive health benefits.
The U.S. 2015 Dietary Guidelines Advisory Committee recommended a similar limit. Lower limits are recommended for pregnant women, adolescents & children.
Lethal caffeine overdoses are rare and estimates of a lethal amount of caffeine in a healthy adult range from 10,000 - 20,000 mg.