coffee

Coffee is often considered safe for a healthy adult when drinking it in moderate amounts, but too much, or drinking the equivalent of four or five cups a day, or the equivalent of 400 milligrams of caffeine may cause insomnia, discomfort, nervousness, stomach upset, fatigue, vomiting, and nausea, Increase the heart rate and respiratory rate, and therefore it can be said that it is possible that coffee is not safe when drinking more than four cups a day, for long periods of time, as this can cause headaches, anxiety, buzzing in the ears, irritability, and an irregular heartbeat, in addition to In addition, drinking more than six cups of coffee per day may cause caffeine poisoning (in English: caffeinism), the symptoms of which are anxiety and agitation.