The pros and cons of coffee: what your body gains and loses

introduction

Coffee is a widely consumed beverage that has a strong aroma and a refreshing effect. However, coffee also has its negative effects. This article will focus on physical health and explore the benefits and harms of coffee on the human body.

benefit

Drinking coffee in moderation can bring many benefits. First, coffee is rich in antioxidants, such as polyphenols and flavonoids, which can help scavenge free radicals and protect cells from damage. In addition, studies have shown that moderate coffee intake can reduce the risk of chronic diseases such as certain cancers, heart disease and stroke.

Secondly, drinking coffee within a reasonable range can also improve brain function. This is because it contains a substance called caffeine, which stimulates the central nervous system after entering the blood and promotes the release of neurotransmitters such as dopamine, norepinephrine and adrenaline. These substances can increase attention, improve reaction speed and memory, and make people more alert and focused.

In addition, coffee can promote intestinal peristalsis and relieve constipation. It contains a substance called cholinesterase, which can stimulate intestinal contraction and increase the frequency of fecal discharge. Therefore, drinking coffee in moderation can improve the function of the digestive system and reduce the occurrence of gastrointestinal diseases.

Disadvantages

However, excessive coffee consumption can also bring about a series of adverse effects. The first is the impact on the cardiovascular system. Excessive intake of caffeine can lead to increased heart rate, increased blood pressure, and an increased risk of cardiovascular diseases such as arrhythmia and coronary heart disease.

The second is the impact on sleep quality. Since coffee contains stimulants, drinking it too late or too much at night may cause insomnia or poor sleep quality. Long-term lack of sleep can have a negative impact on physical health, such as decreased immunity and lack of concentration.

In addition, coffee can also stimulate the digestive system. Excessive coffee intake may increase gastric acid secretion, causing gastritis and ulcers. At the same time, coffee also has a diuretic effect, which may cause dehydration and electrolyte imbalance.

Recommendations for moderate drinking

In order to balance the benefits and disadvantages of coffee, you need to pay attention to the following points when drinking coffee. The first is to control the intake. Generally speaking, 300-400 mg of caffeine per day is a relatively safe range. This is equivalent to 2-4 cups of regular-sized black coffee.

The second is to choose high-quality coffee beans and production methods. Pure coffee that is fresher and has no flavorings or additives is healthier and retains the most nutrients.

It is also important to drink coffee at the right time. Avoid large amounts in the evening or before bedtime to prevent disrupting your sleep quality.

in conclusion

Coffee, as a popular drink, has both benefits and drawbacks. Drinking coffee in moderation can bring many benefits, such as improving brain function and promoting intestinal health. However, excessive coffee intake may have adverse effects on the cardiovascular system, sleep quality and digestive system. Therefore, you need to pay attention to moderation when enjoying the deliciousness of coffee and choose the appropriate intake and time according to your personal situation.

References

[1] Ludwig IA, Clifford MN, Lean MEJ, et al. Coffee: biochemistry and potential impact on health[J]. Food & function, 2014, 5(8):1695-1717.

[2] Nehlig A. Effects of coffee/Caffeine on brain health and disease: What should I tell my patients?[J]. PractIcal Neurology, 2016.