The very core of science is replication of results. That new study could be correct, but the nature of science is that one single study rarely ends the story. I like to think of science as a fabric that is ever expanding. One study is the equivalent of one stitch in that fabric. It is rare that one stitch will change entire pattern of fabric.
Studies involving laboratory mice and other animals are another matter.
The public should be aware that many things that have looked very promising in animal studies have failed miserably when put into clinical trial. Science has a way of building fact upon fact. It just doesn't pay to change your lifestyle around a single study. That's just the nature of science. Unfortunately, as a nation we're not trained for uncertainty.