It's black coffee, suggest you can drink it as afternoon tea, never drink coffee on an empty stomach, especially in the morning when you get up to drink coffee, this habit is very bad, it will damage the mucous membrane of the stomach wall.

Appropriate coffee can play a certain role in weight loss, because it has a certain inhibition of the role of gastric absorption, but the energy of coffee is not low, oh, energy is finally converted to ATP, and then converted to fat hoarding, so it is recommended that you do not use coffee to lose weight.

Drinking coffee for a long time, as long as you insist on carefully brushing your teeth every day, is not going to lead to tooth discoloration. However, in the clinic, I often encounter many patients who drink many cups of coffee a day, but do not pay attention to brushing, resulting in exogenous staining of the teeth, that is, the teeth become yellow or turn brown, but this can still be removed through the cleaning of the color stains.

I used to like drinking coffee, but I drank a lot of it every day, which led to stomach problems, and now I basically don't drink more than one cup a day, so I hope this helps.