Coffee is a drink containing caffeine that acts as a mild stimulant. Coffee is derived from the tree Coffea arabica that grows in tropical climates worldwide but is native to Africa.
It has also been used to treat headaches and mild asthma and causes frequent urination.
Excessive consumption may lead to dependence, palpitations, rapid heart rate, insomnia and headaches.
(Last modified: 8th Oct 2014)