We are constantly hearing the comment that the incidence of Diabetes and also various cancers have increased immensely during the past half century.  As Paracetamol is marketed globally and is cheap, easily obtained, is by the sales gross figures quoted -  taken regularly by millions of people of all countries, and is generally believed to be benign and very safe and pose no threat to human health -- compare other products, for example tobacco, is considered top be the cause of lung cancer and a contributor to other medical illness-- and in view of the well documented numerous adverse effects of long-term therapeutically correct use as well as excessive use of paracetamol, why has there been no study comparing Paracetamol usage with   the incidence of diabetes and other endocrine andrelated diseases?