Canadian physician Gabor Maté is a specialist in terminal illnesses, chemical dependents, and HIV positive patients.

Dr. Maté is a renowned author of books and columnist known for his knowledge about attention deficit disorder, stress, chronic illness and parental relations.

His theme at TEDxRio+20 was addiction -- from drugs to power. From the lack of love to the desire to escape oneself, from susceptibility of the being to interior power -- nothing escapes. And he risks a generic and generous prescription: "Find your nature and be nice to yourself."

In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized.* (*Subject to certain rules and regulations)