What I tell patients is, if you like coffee, go ahead and drink as much as you want and can," says Dr. Peter Martin, director of the Institute for Coffee Studies at Vanderbilt University. He's even developed a metric for monitoring your dosage: If you are having trouble sleeping, cut back on your last cup of the day. From there, he says, "If you drink that much, it's not going to do you any harm, and it might actually help you. A lot.
What else can you expect from an "institute" with a name like this?
And, surely enough, a little more digging brings this:
Nashville's Vanderbilt University is to establish an Institute for Coffee Studies this fall, funded by $6 million from the Brazilian Coffee Association and other coffee-growing organizations.
http://www.nature.com/nm/journal/v5/n3/full/nm0399_252b.html