Morning rituals often include a cup of tea or coffee, a practice that many believe dispels sleepiness and boosts alertness. Indeed, these beverages have become synonymous with kick-starting the day, enhancing performance and concentration.
Caffeine is the key ingredient in tea and coffee that stimulates the nervous system. On average, 100 grams of tea contains about 11 grams of caffeine, while coffee has a higher concentration, with about 40 grams per 100 grams. This difference explains why coffee is generally more potent in warding off sleep and energizing the nerves.
Once ingested, caffeine travels swiftly to the liver via the bloodstream, where it undergoes metabolism. Its primary target, however, is the brain, where it influences various neurotransmitters. Adenosine, one such neurotransmitter, promotes relaxation and sleepiness as its levels rise during the day. Caffeine blocks adenosine receptors, thereby reducing fatigue.
caffeine triggers an increase in adrenaline, the hormone associated with heightened emotions and excitement. It also boosts dopamine and nor-epinephrine levels, contributing to its stimulating effects. Approximately 80% of the global population consumes caffeinated products daily.
While caffeine has its advantages, such as lowering the risk of Alzheimer’s and other neurological disorders, excessive intake can lead to dependency. Withdrawal symptoms like headaches, discomfort, and increased heart rate highlight the importance of moderation in caffeine consumption.
While tea and coffee serve as beloved morning stimulants worldwide, understanding caffeine’s effects and maintaining a balanced intake are essential for long-term well-being.
