Well we all know that excessive intake of caffeine is harmful for human being. But do we know what actually caffeine is? Caffeine is a crystalline substance that acts as a drug sometimes. Caffeine in nature is found in the form of leaves, fruits and mainly in seeds of coffee beans. In such naturally occurring substances, it acts as a pesticide that paralyses insects and pests attacking on them.
Caffeine is toxic at sufficiently high doses, but ordinary consumption poses few known health risks, even when carried on for years — there may be a modest protective effect against some diseases, including certain types of cancer. Some people experience sleep disruption if they consume caffeine, especially during the evening hours, but others show little disturbance and the effect of caffeine on sleep is highly variable.
Caffeine is used to reduce fatigue and to restore the alertness. It produces increased wakefulness, faster and clearer flow of thought, increased focus, and better general body coordination. The amount of caffeine needed to produce effects varies from person to person, depending on body size and degree of tolerance. Effects begin less than an hour after consumption, and a moderate dose usually wears off in about five hours.
Caffeine has a number of effects on sleep, but does not affect all people in the same way. It improves performance during sleep deprivation but may lead to subsequent insomnia. In shift workers it leads to fewer mistakes caused by tiredness. In athletics, moderate doses of caffeine can improve sprint, endurance, and team sports performance, but the improvements are usually not very large. High doses of caffeine, however, can impair athletic performance by interfering with coordination. Evidence shows that, contrary to common advice, caffeine may be helpful at high altitude. Drinking four or more cups of coffee per day does not affect the risk of hypertension compared to drinking little or no coffee. However those who drink 1–3 cups per day may be at a slightly increased risk.
Consumption of large amount of caffeine leads to a condition called as caffeinism. Now understanding caffeinism is not that difficult task if we have bit of knowledge about how human nature changes when a lack of something occurs. Caffeine acts on the body by restoring the alertness and eradicating fatigue. Now if one goes with excess quantity of caffeine, he might end up going sleepless for many days or insomniac. This condition leads to unpleasant physical and mental conditions including nervousness, irritability, restlessness, insomnia, headaches. Such changes are obvious if one goes without sleep for many days. This condition is called as caffeinism.
Coffee consumption is associated with a lower overall risk of cancer. There does not appear to be a significant protective effect against other types of cancers, and heavy coffee consumption may increase the risk of bladder cancer. There is little or no evidence that caffeine consumption increases the risk of cardiovascular disease.
The four main caffeine resulting psychological disorder recognized by world’s leading psychiatric agency are caffeine-induced sleep disorder, caffeine-induced anxiety disorder and caffeine-related disorder not otherwise specified. High dosage of caffeine intake may cause anxiety. While moderate dosage reduces symptoms of anxiety and reduces suicide risk.
If we say why caffeine is bad, then addiction is our answer. Being drug stimulant property is being exploited to act as a substitute of drug. The stimulatory effects of caffeine are substantially reduced over time, a phenomenon known as a tolerance.
The use and misuse depends on our decisions. Coffee can be boon or a bane on the way we use it.
Why don’t you share your own memorable coffee moments ?? Somethings can definitely happen over a cup of Coffee