It can be a welcome waker-upper in morning taken in that morning cup of coffee. It also helps give some a boost to stay awake late in day. However, boost isn't necessarily instant as it takes about an hour for effects of caffeine to make it's way through bloodstream and into system. It has benefits and it has side effects. It helps keep us alert. It stimulates central nervous system. Some say it improves physical and mental performance. It has diuretic activity. Some studies list is as a mood elevator, and a pain reliever. Because of increased alertness levels of those who consume caffeine, there has been improved performance in activities such as test-taking, driving, flying and problem solving.

What is a Toothache?

A "Toothache" can usually be referred to as pain that is felt around teeth and or jaw. The cause of a toothache in most cases is by either problems with your jaw and or tooth. In most cases you (and I am talking from experience here) you would just leave it and wait for pain to subside, but this isn’t correct thing to do. Toothaches are a sign that there may be more to worry about then just a little pain. The causes of toothache are several but major causes are, dental cavity, a cracked tooth, exposed tooth root, gum disease, disease of jaw joint or spasms of muscles used for chewing. It is possible for cause of a toothache to originate from an entirely different problem such as heart attack or angina but this is quite rare. It can be noted however that some patients suffering angina will show toothache or jaw pain as only symptoms so it is always best to let your dentist or doctor evaluate you. What are most common dental causes for a toothache? Dental Cavities

The most common cause of a toothache is a dental cavity. Dental cavities (caries) are holes in two outer layers of a tooth called enamel and dentin. The enamel is outermost white hard surface and dentin is yellow layer just beneath enamel. Both layers serve to protect inner living tooth tissue called pulp, where blood vessels and nerves reside. Certain bacteria in mouth convert simple sugars into acid. The acid softens and (along with saliva) dissolves enamel and dentin, creating cavities. Small shallow cavities may not cause pain and may be unnoticed by patient. The larger deeper cavities can collect food debris. The inner living pulp of affected tooth can become irritated by bacterial toxins or by foods that are cold, hot, sour, or sweet-causing toothache. Toothache from these larger cavities is most common reason for visits to dentists. Treatment of a small and shallow cavity usually involves a dental filling. Treatment of a larger cavity involves an onlay or crown. Treatment of a cavity that has penetrated and injured pulp requires either a root canal procedure or extraction of affected tooth. Injury to pulp can lead to death of pulp tissue, resulting in tooth infection (dental abscess). The treatment of an infected tooth is either removal of tooth or a root canal procedure. The root canal procedure involves removing dying pulp tissue (thus avoiding or removing tooth infection) and replacing it with an inert material. The procedure is used in an attempt to save dying tooth from extraction. Gum Disease