Yeah I don't understand this post at all either. Why would doctors be concerned about an obviously obese person getting down to a healthy weight and maintaining a somewhat appropriate calorie intake? Granted 1000 calories might be a little on the low side depending on her size (For perspective sake I'm 4'11" and maintain a BMI of 21 at between 1200 - 1500 calories with an averagely active lifestyle).  I mean I guess either way, 3k calories is unrealistic in the long term and would put someone back to being overweight. But for most people who aren't midgets like me 1k calories is also kinda unrealistic as well in maintaining a healthy BMI? I'm with you man, I don't really get the point of the post lol.