Coffee and tea taboos: efficacy showdown

Coffee and tea taboos: efficacy showdown

Coffee and tea are among the most popular beverages in the world, and both have many health benefits. However, due to their different ingredients and mechanisms of action, coffee and tea may have opposite effects in some cases. This article will explore the contraindications of coffee and tea in different aspects and their respective benefits.

1. Effects of coffee on the cardiovascular system

Numerous studies have shown that drinking coffee in moderation can reduce the risk of heart disease, stroke, and other cardiovascular diseases. This is mainly attributed to the rich antioxidants and bioactive substances in coffee, such as polyphenols, chlorogenic acid, etc. These ingredients can help lower cholesterol levels, improve blood circulation, and reduce atherosclerosis.

However, in some cases, excessive caffeine intake may lead to cardiovascular problems such as high blood pressure or arrhythmia. Caffeine can stimulate the central nervous system and increase heart rate and blood pressure. Therefore, for people who already have heart disease or high blood pressure, excessive coffee consumption may worsen the condition.

2. Effects of tea on the digestive system

Tea is a natural diuretic and antioxidant. It is rich in tea polyphenols, catechins and vitamin C, which have antibacterial effects, inhibit the development of intestinal tumors, and promote gastrointestinal motility.

However, in some cases, excessive tea intake may lead to problems such as indigestion or stomach ulcers. Tea contains a large amount of tannic acid, which can easily irritate the gastric mucosa and cause stomach discomfort when the stomach is empty. In addition, excessive caffeine intake may also cause indigestion.

3. Coffee and Anxiety

Moderate coffee consumption can provide alertness, enhance concentration and memory, and improve mood. This is primarily attributed to the stimulatory effects of caffeine on the central nervous system. However, for people with anxiety disorders, consuming too much caffeine may worsen symptoms.

In contrast, the amino acid L-theanine in tea can promote the production of alpha brain waves, which can have a calming and relaxing effect. This makes drinking tea in moderation a good option for relieving anxiety and stress.

4. Coffee and sleep

Caffeine is a powerful stimulant that can counteract drowsiness and increase alertness. This is why many people drink coffee in the morning to get a boost. However, drinking coffee in the evening or close to bedtime may cause insomnia or disrupt deep sleep.

In contrast, tea contains lower amounts of caffeine and some ingredients that have sedative effects, such as L-theanine. Drinking black or herbal tea in moderation without sugar or milk can help you relax and promote a good night's sleep.

5. Coffee and osteoporosis

Caffeine may affect the absorption and excretion of calcium, thereby increasing the risk of osteoporosis. Long-term excessive intake of caffeine may lead to calcium loss and decreased bone density. Therefore, it is very important for people who already have osteoporosis or hypocalcemia to reduce coffee intake.

Tea contains some ingredients that are beneficial to bone health, such as vitamin K, fluoride and a variety of trace elements. Drinking tea in moderation can help prevent and relieve osteoporosis.

in conclusion

Overall, both coffee and tea offer many health benefits. However, there are some situations where they can be contraindicated. For most people, these two delicious beverages are safe and beneficial to enjoy in moderation. But if you have a pre-existing health condition or are taking medication, consult your doctor before use to see if you need to limit your coffee or tea intake.