I started back in January on Medifast at 314lbs. When I read that I would be eating 1,000 calories a day, I thought I might die.
I didn't die and it has been the easiest program I have ever been on. I've lost over 50lbs and I'm feeling great. I'm losing on average about 4lbs a week.
It gets much easier after the first few days. Now I have to remind myself to eat sometimes. I love it.