This is due to the stimulation effect of noradrenaline released, causing a spike in blood pressure.Caffeine has its maximum effect on alertness and focus, followed by a slag.This only happens as a rebound effect of large caffeine consumption.This is again due to hyperstimulation of the brain system leading to anxiety and nervousness.Suddenly stopping coffee may result in various withdrawal symptoms such as increased agitation, sleeplessness and headache.Because of its stimulating action on our body, our system gets used to this daily stimulant.Caffeine is a highly addictive substance thus, it shouldn’t be consumed in high doses regularly.Moreover, it hyperstimulates the brain system causing anxiety and agitation.Caffeine reduces the amount of adenosine, which is the tiring hormone and promotes the secretion of dopamine and noradrenaline that helps stimulate the central nervous system.When consumed in large quantities, regular doses can interfere with the normal sleep cycle of a person, thus leaving them more fatigued than before.One of the most prized qualities of caffeine is its ability to reduce sleepiness.Side effects of excessive caffeine intake include: As stated before, since the caffeine content is lower in tea, about two cups of tea equals one cup of coffee, making it possible to drink up to eight cups of tea each day.įor pregnant and lactating mothers, it is less than 200 mg/day (about two cups of coffee or four cups of tea). The recommended dose of caffeine for healthy adults is less than 400 mg/day, which equals about four cups of coffee. Similar to tea, the longer the coffee beans are brewed, the higher the caffeine levels become. The longer the tea leaves are heated in warm water, the higher caffeine levels steep into the prepared cup. The caffeine content in tea and coffee compared Beverage Similarly, the caffeine content of coffee depends on the beans used and the brewing process.īelow is a table that compares the caffeine content of different tea and coffee beverages.
The amount of caffeine in tea significantly varies depending on the type of tea and the tea leaves used.
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