Be careful of dehydration when drinking coffee
Besides its nerve-stimulating properties, caffeine also has a powerful diuretic effect. After drinking coffee, people may feel the urge to urinate frequently, similar to after drinking alcohol. This is actually a result of caffeine's diuretic function. When a person urinates frequently without adequately replenishing fluids, they can easily become dehydrated, leading to various symptoms caused by a lack of water in the body, which should be taken seriously. When drinking coffee, one should pay attention to replenishing with plain water. You can also judge if you are dehydrated by observing the color of your urine. If your urine is dark yellow, it indicates that your body is in a state of dehydration. At this point, you should not continue drinking coffee and should instead drink more plain water. Additionally, it's worth noting that caffeine can stimulate excessive secretion of stomach acid, so people with excess stomach acid should drink less coffee and, more importantly, avoid drinking it on an empty stomach.
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Drinking coffee can cause palpitations, so it should be avoided
Due to its medicinal effects, if the concentration of caffeine in the blood rises sharply, it may stimulate the central nervous system, causing mental symptoms such as dizziness, rapid heartbeat, excitement, and anxiety. If the concentration of caffeine in the blood exceeds 40 micrograms/milliliter, anyone may experience symptoms such as arrhythmia and spasms. A report states that women who drink 6 or more cups of coffee a day have a 2.5 times higher risk of myocardial infarction; in regions of Finland with high coffee consumption, the mortality rate is also higher. However, numerous prospective studies cannot prove that coffee is an independent cause of death from coronary heart disease. Although some people experience a slight increase in blood pressure one hour after taking 250mg of caffeine, numerous studies have found no relationship between coffee consumption and blood pressure. Caffeine can shorten the effective refractory period of the atrioventricular node, leading to various types of tachyarrhythmias and premature beats. There has been one case of paroxysmal atrial tachycardia after drinking coffee. This means that for some people sensitive to caffeine, there is a link between caffeine intake and heart health. For example, the woman mentioned in a report who died suddenly after drinking coffee might have been sensitive to caffeine, causing symptoms like palpitations, dizziness, and even potentially triggering sudden cardiac death. Therefore, if you experience palpitations, dizziness, or other symptoms after drinking coffee, you should reduce or avoid caffeine intake.
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