Tears

A fascinating study has found that sniffing female tears significantly reduced male aggression and decreased activity in aggression-related brain networks. It’s suggested that the effect, which is also seen in rodents, serves a protective function.

​As is the case with so many other maladies, the sooner that Parkinson's disease is definitively diagnosed, the better. With that in mind, scientists from UCLA now believe that it may be possible to detect the disease earlier than ever, via analysis of the patient's tears.

Ordinarily, dry eye sufferers turn to drops or other medication to keep their eyes lubricated. Recently, however, researchers at the Cincinnati Eye Institute tested a new gadget that promises drug-free relief from dry eye – and you stick it up your nose.