Subscribe To This Site
Caffeineby Mirella Levin
What is Caffeine?
Caffeine is a naturally produced drug that takes the form of white powder. Caffeine is often used as a stimulant for the central nervous system and for the heart. It can also be used in the treatment of migraines. However, because it is used as a stimulant we classify it as a drug. Many people consume caffeine on a daily basis through drinks such as coffee, tea or soda (e.g. coca-cola, ice tea etc.). Caffeine increases our alertness and it gives our nervous system a boost to help us stay awake. The effects of caffeine can persist for up to six hours even though the drug is not stored in our bodies.
Negative Effects of CaffeineThere are many negative effects to caffeine. It can become addictive just like any other drug. Many people who drink large quantities of caffeine might experience withdrawal symptoms such as headaches (these can last for up to five days and are the result of decreasing blood pressure), nervousness, being irritable, restlessness and fatigue. Caffeine can also lead to certain illnesses such as caffeinism which is a condition caused by the intake of excessive amounts of caffeine.In high doses, caffeine can lead to many health issues such as anxiety, headaches, dizziness and shaking. Some people are more sensitive to caffeine than others. This is known as caffeine sensitivity (how much caffeine is required to produce an effect). The general rule is that a smaller person will require less caffeine to have side effects. Similar to other drugs, the more caffeine you ingest the less sensitive you become to it. Over time people can build up immunity to caffeine where they hardly feel the effects of the drug. Caffeine is also a diuretic so it will lead to more frequent urination. This could potentially lead to dehydration; however this theory has not been proven yet. However, there is evidence that the consumption of caffeine can result in the loss of calcium in the body and this can eventually lead to bone loss. Caffeine is not harmful if consumed in moderate quantities. For an adult, it is suggested that 200-300 mg of caffeine a day is an acceptable quantity. Because caffeine is becoming increasingly popular with teenagers, it is recommended that teenagers limit their caffeine intake to no more than 100 mg per day. Where is Caffeine Found?The following chart shows some of the foods that have caffeine and just how much caffeine they contain:
(Source: U.S. Food and Drug Administration, National Soft Drink Association, Center for Science in the Public Interest) Image: http://www.euro-caffeine.com) A Word of CautionBecoming dependent or addicted to caffeine is relatively easy: by consuming 100 mg of caffeine on a daily basis. This can lead to any of the withdrawal symptoms listed above.TOP of Caffeine BACK to age-well.org
|
