It was many years ago that coffee became very important to us. People usually speak about liking a good stimulant to have enough energy in the morning to go to work. Despite that, I think that coffee can be unhealthy for you ,  and it had bad effects on you, but if you drink it sparingly, it can be good for you.

Firstly, coffee can be dangerous. If you drink it too much, it can give you a headache. People usually drink it to stay awake because it stimulates your brain. Too much can lead you TO insomnia, indigestion and high blood pressure. 

On the other hand, people who like having a balanced diet have to drink it only a few times because it has got antioxidants that are good for your body. 

In conclusion, I would say that coffee can have bad effects on you if you drink it frequently ,  but if not, it is a very important drink in your life.