Insomnia drove late Pope Benedict to resign, says report

Following the incident, his doctor pushed for a "reduction" in Benedict's use of sleeping pills and insisted that Benedict only participate in morning events on future foreign trips. 

In this file photo taken on March 25, 2012 Pope Benedict XVI leads the holy mass on the occasion of the 400th anniversary of the discovery of the image of the "Virgen de la Caridad del Cobre"