The most important thing in the topic about the effect of coffee on human health is what is called “how many grams”. Those. the answer to this question lies in quantity, as in everything, the measure is important here. If you drink 15-20 cups of coffee a day, then most likely nothing good will come of it, but if there are 3 cups, then only good! Drinking this amount of coffee can reduce the possible risk of death from cardiovascular diseases, brain and gastrointestinal diseases. Here you can look at the research on this topic - I assure you, they will impress you https://marinahaifa.com/11644/
Coffee is nectar from coffee beans, which contains a lot of vitamins and useful microelements. Caffeine stimulates the body and improves mood, but in reasonable doses. So, for example, Robusta contains 2 times more caffeine than Arabica. Robusta will help to cheer up, but symptoms of an overdose may appear: twitching, harshness in movements, sweating, nausea, etc. Therefore, it is better to drink a drink based on Arabica and, as a last resort, robusta coffee drinks on a ristretto.
But, Arabica is also not as harmless as it seems. Arabica beans are full of acids, so people with ulcers, high acidity and other digestive system problems are better off avoiding coffee or keeping it to a minimum. The situation is aggravated by light roasting of coffee, which retains its "acidity". It is best to drink medium roasted coffee. Dark is also not suitable - if you overcook coffee, harmful substances appear in the beans.
As you can see, there are pros and cons in coffee, you just need to drink in moderation, and then it will do you good!
Definitely positive. Moreover, in reality, there are practically no restrictions on the volume of coffee consumption (it is clear that you can drink water to death). Coffee is very useful and trains the blood vessels of the heart - clinically proven. As a dentist, I would only advise you to use a minimum of sugar, drink a glass of water after drinking coffee.