Harvard Medical School has the biggest "brain bank" of any medical school in the world. People leave their brains...or give the brains of their loved ones...to Harvard. Those familiar with how medical research works know that a single study on a given topic...even one conducted by respected researchers...cannot be taken as "gospel". It's only after several researchers study the same topic and reach similar conclusions that "science" can begin to accept the validity of the conclusions.
I want to see what Harvard...Columbia....Hopkins...Mayo Clinic...Stanford have to say on the subject.