Which studies should I believe? 

There are so many studies being quoted all over the place! One recommends a certain level of drinking but another study negates it. There's some excitement about dairy being harmful, followed by statements that it isn't! How do we know what to believe? What should we embrace and strive towards? 

Dr. Tushar Mehta describes the characteristics of a good study, to help us work out which studies we should ignore and which ones we should pay attention to.