The magic stick of cinnamon can have astounding effects on human health. It is believed that in ancient times cinnamon was more expensive than gold. Its name has also been mentioned in the Bible. The well known herb is actually a bark of several trees from the genus Cinnamomum that is dried and then rolled into sticks called quills. The dried cinnamon barks are also grounded to make cinnamon powder. This small tree is mostly grown in Brazil, India, Sri Lanka, Vietnam, Indonesia, and Egypt. Found in it is an essential oil called cinnamaldehyde, which gives it a magnificent taste and aroma.