It CAN be done after 40!!!
MyFitnessPal has been my Bible since January 11th. Gone from 185 down to as low as 138 and maintaining 140-142. I'm 5'9, and have gone from a size 12 to a size 4 / 6 in right around 5 months. I log EVERYTHING, and run one mile a day. So thankful for this app and this community!