I've talked to both of my Dr.'s about that and have learned a bunch watching Biggest Loser and reading health books that says it's okay to lose weight quickly as long as your body is getting the nutrients it needs, your not doing it by starving and you get enough exercise and rest. I'm doing all of these things. I eat when I'm hungry. I stay away from processed foods. I walk on the treadmill everyday. And I do my best to get at least 6 hours of sleep a night. In 8 days I have lost about 13.6 lbs. (give or take an oz.)
I'm finally back in control and not thinking about food all the time. I eat to live, not live to eat.