I had been drinking coffee ever since I was young and from that young age I never had any day I think that I never had a cup. I remember drinking as many as four or five cups a day and that resulted in a stomach upset and disturbed sleep.
I am certain that drinking many cups of coffee is bad because it gives a person a hyperacidity issue in the stomach which is painful and may lead to ulcers. It also make the sleep of a person light so they may never sleep like a baby if they would be drinking many cups of coffee for that matter.
As for me I was just drinking coffee because I was afraid of having the withdrawal symptoms like restlessness and pounding headache and also before it was my cure for headache in the years that I was anemic.
But now it seems that my addiction to coffee was cured so I will not drink it anymore but I do need caffeine in my dialysis days so I will not be that totally caffeine free but at least this kind of lifestyle change could do me better. I am just drinking pineapple juice now.