In October 2011, Brand and Perry announced via Twitter that they had switched to a vegan diet after watching the documentary "Forks Over Knives“ which explores ways that plant-based diets can reduce risks for cardiovascular disease and other chronic conditions. On 30 December 2011, Brand filed for divorce, citing irreconcilable differences, which was finalised in July 2012. Perry's July 2012 autobiographical documentary, "", revealed that conflicting career schedules and Perry not feeling ready to have children led to the end of their marriage. In June 2013, Perry told "Vogue" that Brand did not like the idea of her "being the boss" of things, and the last time she heard from him was 31 December 2011, when he sent her an SMS message informing her he was divorcing her.