For the first time, the World Health Organization suggests the use of a medication for the treatment of obesity. The WHO states that diabetes medications, which have been widely used for weight loss, should be increasingly accessible to the general population and urges different countries to adopt public policies that allow for the widespread use of these medications. In this morning's Expresso, Paulo Baldaia talks with João Jácome de Castro, outgoing president of the Portuguese Society of Endocrinology, Diabetes and Metabolism, and an endocrinologist at the Armed Forces Hospital.