Transcript for Christie Fires Back at Lap Band Questions
Now that new jersey governor chris christie has revealed to the world he had weight loss surgery earlier this year there are big questions about how he managed to keep it a secret for as long as he did. Of course, he's saying he did it just to be around for his wife and kids and abc's paula faris has the story. Reporter: Chris christie is wasting no time to devouring his critics. Your opinions on this issue really don't matter a whole hell of a lot for me. Reporter: He's known for his healthy appetite. It's nobody he's business. Reporter: Sounded off at reporters fuse who questioned why he kept his lap band waist surgery secret even from his lieutenant governor. It's like deciding if I take a nap on saturday, do I say, kim, I'm taking a nap for 40 minutes, you're in charge. I mean, ridiculous. Reporter: The governor who was up for re-election in the fall said he got the idea of surgery from new york jets coach rex ryan who had the same operation. Christie's doctor met him at undisclosed locations and on the day of surgery even used a fake name. I'm sure you're very curious about that. I'm not telling you the name i used. Reporter: In lap band surgery doctors place a silicone band around the stomach to reduce its size reducing the amount of food it can hold. Since februa christie has lost 30 pounds. The governor once the captain of his baseball team said his growing waistline has been weighing heavily on him for close to 30 years becoming the subject of endless jokes. Christie hopes to visit the site of the last supper to see if there's any leftovers. Bring it, fat boy. Reporter: He's been a fad dieter and has a personal trainer. I do everything he tells me to do. Reporter: Nearly three months in he hopes the scales tip in his favor but not tipping his hand as to how much he plans to shed. Nobody's business but mine and that's the reason I made the decision I did. He was roasted. One reporter joked I guess springsteen is no longer the band closest to his heart.
This transcript has been automatically generated and may not be 100% accurate.