4 in 10 millennials say they only trust YouTube for videos on causes they care about. Appears In 5 online video trends to inform your 2017 media plan Related Data In the U.S., interest in videos related to stress management is rising, with watch time rising over 60% YOY. In Brazil, the hours of content uploaded from YouTube channels has grown by 50% between 2017 and 2018. 7 in 10 people feel empowered, motivated, or confident after learning something new from a YouTube video. In France, the hours of content uploaded from YouTube channels has grown by over 175% between 2016 and 2017. Relevant video ads get 3X the attention compared to the average video ad. 70% of millennial users watched YouTube in the past year to learn how to do something new or learn more about something they're interested in.