Coffee was first discovered and became popular among the people of Arabia. When it was first introduced into Europe during the second part of the seventeen century, there was a great deal of controversy about it. Many doctors announced that coffee was a strong poison and should be prohibited . Others insisted that it was a good thing to drink coffee, and coffee-houses sprang up everywhere
Coffee can actually act as a poison when it is given in large doses to animals in laboratory tests.It can also produce toxic effects in small children. But for adults who drink it in moderation, it is definitely not a poison.
The coffee bean contains one per cent of a substance known as caffeine. Most people believe that it is the caffeine which produces all the effects that coffee has on the body, but other substances in the bean are involved too.
Here are some of the things that happen when someone drinks coffee. The odour of the coffee itself produces stimulating effect in various parts of the body. The blood vessels in the brain are dilated so that circulation in improved, and this removes some of the fatigue toxins from the brain. Coffee increases the pulse rate , which in stimulates the heart. Coffee increases the tone of the muscles, so they can work harder. The intestine becomes more active because of coffee, which has a slight laxative effect. Coffee makes the gastric glands secrete more actively. For healthy people this is desirable, especially after a heavy meal but for others it may produce heartburn. Coffee also helps the body remove salt from the blood.
Coffee actually produces different on the body at different times of the day. The morning coffee acts on the kidneys and helps the body get rid of waste products accumulated during the night. Coffee taken in the evening seems to stimulate the mind and the imagination. Some people avoid drinking coffee at night because that is the time when they to relax. Other people seem quite able to sleep despite the caffeine in their coffee.