Scientists agree: Drinking coffee is good for you. That’s good news if, like most Americans, you enjoy coffee and perhaps rely on it to help you wake up in the morning or stay alert during the day.
In the last couple of years, more detailed research on coffee has sought to zero in on just how much coffee you should drink every day for maximum health and brain benefits. They’ve found the answer: You should drink three cups. That advice comes from Dr. Uma Naidoo, who’s been described as a “triple threat”: a Harvard-trained psychiatrist, trained nutrition specialist, and trained chef. She’s also the author of the bestseller This Is Your Brain on Food. In an article at CNBC.com, Naidoo explains how she uses coffee as part of her daily routine to boost her own brain function. (Naidoo’s routine includes putting shots of espresso into golden milk, which sounds like a fantastic idea to me.)
Why three cups? Naidoo points to a study in which researchers tracked both the coffee consumption and cognitive health of 676 elderly men over 10 years. They found that the coffee drinkers had less than half the cognitive decline as the non-coffee drinkers did. And those who drank three cups a day had the least decline of all. A larger Harvard study, with 208,501 participants (both men and women), examined the likelihood of death over more than 20 years. It found that participants who drank coffee were less likely to die early than those who didn’t, with the greatest longevity benefit going to those who drank between 3.1 and five cups a day.
If you want the maximum benefits from your coffee habit, make sure to follow these three rules.
1. Filter it.
Many sophisticated coffee drinkers favor espresso, French press, and Turkish coffee–and some love the Scandinavian tradition of boiling coffee with an egg in it (sometimes including the shell), which pulls together the grounds. Unfortunately, all these versions of coffee can be bad for you. When coffee is made without a paper filter, “oily chemicals called diterpenes come through that can raise artery-damaging LDL cholesterol,” according to the New York Times‘s Jane Brody. Brody, who uses coffee pods, actually dissected one to make sure it contained a paper filter (it did).