Coffee, tea, and cocoa are known as the world's "three major beverages". Coffee's many active ingredients have various physiological effects, such as stimulating the nervous system, refreshing and relieving fatigue, promoting digestion, acting as a diuretic and cardiotonic, and providing an astringent effect. It is also effective for conditions like mental fatigue, exhaustion, drunkenness, urinary retention, and attention deficit hyperactivity disorder in children. The benefits of moderate coffee consumption for asthma.
Recent research indicates that coffee also has therapeutic effects on asthma. The main component of coffee, caffeine, is a central nervous system stimulant. In addition to exciting the cerebral cortex, relieving fatigue, and refreshing the mind, it can also relax bronchial smooth muscle. This can treat asthma attacks, as caffeine's relaxation of the bronchial smooth muscle relieves spasms, significantly increases ventilation, and helps expel retained substances from the bronchi, thereby preventing and treating asthma attacks. At the same time, it can cause peripheral vasoconstriction and visceral vasodilation; it can accelerate the metabolic rate, increase gastric acid secretion, and promote digestion.
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If consumed in excess or over a long period, coffee can be addictive. It is generally recommended to limit intake to no more than two cups of moderately strong coffee per day. Furthermore, the timing of coffee consumption is important. It is best to drink it in the afternoon. Drinking strong coffee in the evening can over-stimulate the nervous system, leading to insomnia. Patients with chronic gastrointestinal conditions should drink half a cup of weak coffee after meals to promote gastric juice secretion and aid digestion. Asthma patients should drink it twice a day, in the morning and evening, in conjunction with necessary medication and physical therapy. It is worth noting that pregnant and postpartum women, infants and young children, individuals with cardiovascular and cerebrovascular diseases, and those with neurasthenia and insomnia should not drink coffee.
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