Be careful of dehydration when drinking coffee
In addition to its stimulating effect on the nervous system, caffeine also has a powerful diuretic function. After drinking coffee, people may feel the need to run to the restroom frequently, just as they would after drinking alcohol. This is actually a result of caffeine's diuretic effect. 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 check 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 dehydrated state. At this point, you should not continue drinking coffee and should instead drink more plain water. Additionally, it is worth noting that caffeine can stimulate excessive secretion of stomach acid, so people with excessive stomach acid should drink less coffee and, more importantly, avoid drinking it on an empty stomach.
Drinking coffee can easily cause palpitations, and its consumption should be avoided
Due to its medicinal effects, if the concentration of caffeine in the blood rises sharply, it can 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 has stated 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 have not been able to 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 consuming 250mg of caffeine, a large number of 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 who are sensitive to caffeine, there is a correlation between caffeine intake and heart health. For example, the woman in the report who died suddenly after drinking coffee might have been sensitive to caffeine, causing symptoms such as palpitations, dizziness, and vertigo, and possibly even triggering sudden cardiac death. Therefore, if you experience palpitations, dizziness, or other symptoms after drinking coffee, you should reduce or avoid caffeine intake.