Detailed text transcripts for TV channel - KGO - 20140107:10:47:00
Are. >> reporter: similarly in the long run, she wasn't able to keep the weight off. >> i was able to keep it off for a little bit and i gained it back. and a little bit more. >> reporter: turns out, they're among the 85% of dieters who fail. recent studies say it's a matter of biology. >> your body starts to secrete hormones that make you feel hungrier. your brain responds more to food cues, telling you to eat those foods. >> reporter: but there is an elite group -- people who have beaten the odds. they're called super dieters. they've not only lost weight but kept it off for years. more than...