Most people didn't think coffee was helpful at all, but there's some good points too. It's caffeine people want in coffee and that's good for your brain and it's a good way to make money.
And too much caffeine can make you jittery, raise your lipid levels, even make your blood pressure jump, so as with everything else, drink it in moderation, and preferably don't gulp it all down in the morning, but spread it out a little through the day,