Probably the most widely discussed subject related to coffee drinking is one particular element the drink contains: caffeine. This substance is blamed for a whole host of things that make people uneasy about coffee, and is credited with many other things that appear to be beneficial. But what is this substance, exactly, and why does it come up so often when coffee is being talked about?

First of all, it’s not just found in coffee, even though that’s the product it’s most often associated with in the public mind. It’s an alkaloid chemical found in many plants, either in the bean or fruit, as it is in coffee, or in leaves, as you find in tea. And its basic purpose appears to be to act as a pesticide, paralyzing and killing certain…


Source by ted sikkink