Maybe it said something like only 5% of people who lose weight keep it off for more than a year. The group of people with the highest rate of success are usually those who consulted a nutritionist and got taught how to weigh food, count the calories, portion sizes according to amounts of calories and nutrition needed, and kept a food journal documenting what, when, where and why they were eating.
If there is anyone here interested, there is a book out called Eat This, Not That which inspired a dear friend of mine to loose 10 pounds a month, every month since she got the book, just by making better fast food choices. My choice is to not let strangers with questionable hygene touch my food, but hey, that's why I am in risk management.