I didn't see the show, but this is a big concern for me too. I've struggled for years on how to deal with my DD. She's not overweight, but she stores fat in her stomach and on her thighs. You can tell by her body type that she is prone to having serious weight problems as an adult. It's so confusing to know how to deal with it. If you make it a big deal, will you cause her to develop an eating disorder? If you ignore it, will you cause her to develop obesity?
Fortunately, DH and I starting Atkins has gotten her interested in nutrition. She knows more at age 12 than I did at 39 years of age. She has voluntarily cut out most sugar and processed foods. I no longer cook pasta, rice and potatoes and she chooses not to eat them when she is out. She doesn't weigh regularly, but I have noticed that her pants are getting a bit looser. I sincerely hope that she is learning what she needs to know to stay healthy as an adult. :