Decaf coffee isn’t devoid of caffeine; it has only been reduced to a subtle level. Decaf coffee could probably contain 0-7 mg of caffeine per cup, but it less than the amount you will get in a regular caffeinated coffee. Also, when it comes to decaf coffee, only caffeine content has been reduced. It still has the regular content of anti-oxidants, which can help boost body immunity and improve body metabolism. Among other benefits, a decaf coffee helps reduce the chances of premature death, prevent the development of neurodegenerative diseases like Alzheimer’s and Parkinson’s.