I am such a big fan of coffee. And though this benefits can sound so good to you, there actually are a lot of negative effects it can also bring to the table. I have been depending on coffee for a big part of my life and now, I can see some manifestations from it. There is some measure of not being able to keep up with being sleepy without coffee. I mean, before I can simply take an all nighter without coffee but now, I would need my regular caffeine fix to accompany me through the night.