I have lost more than 100 pounds 3 times since puberty, each time maintaining for a year or so then gaining it all plus some back in a relatively short amount of time. I am the classic yo-yo'er been all the way up to 351 and all the way down to 145. Lost 135 the first time my junior year of high school, gained 150 back at 19, lost 120 at 21 gained it all back plus some at 23, lost 100 at 25, and gained it back in 6 months or so continued to gain until last fall when I got my first appointment for dr supervised diet, lost and gained back the same 12 pounds until surgery in April. I am 28 now, and down 71 pounds since surgery on April 25th....I am working this tool