NEWS.com.auThe Truth About Obesity documentary uncovers truth behind weight gainNEWS.com.auA BRAND new documentary has revealed the five surprising factors that can make you gain weight without you even realising. Phoebe Cooke. The SunApril 29, 20184:15pm. Video; Image. Play Video. Play. Mute. 0:00. /. 0:00. Loaded: 0%. Progress: 0%. Stream ...and more