Part of Super Nevets condition is the inability to gain weight. We've struggled with it since he was like 3 months old. He came out huge (9lbs 11oz) but that was it. His neurosurgeon said it was really good that he was that big considering the severity of the operation he had when he was less than 24 hours old :D We've done all kinds of  testing to make sure we were missing anything. All came back normal. We've had him on a very high calorie diet since he was a wee one. Average calories for breast milk or formula is roughly 20. We had his bumped up to 40/45. We did pediasure and all kinds of other things. We've been adding butter to everything he eats since he went to solids :) Nothing would make him bulk up. We finally switched pediatricians after his first way refused to see anything but a chart. He wasn't following standard growth charts, so he was a failure to thrive child and I was a bad mom. We got an amazing new doctor. He noted that he was following his own growth chart and that was enough. He was still growing. Just slowly :) What a relief. So, I have finally realized that he's gonna eat what he wants to eat. He's 6, almost 7 years old. An average child has developed his own taste and knows what he likes. I try to make his diet include fruits and veggies as much as possible. If it turns out that's in the form of  smoothie and/or juice, I'm cool with it. He's a super active little man, so he eats like one :) Some days I'm shocked by the amount of food he can put away. Today, we had his "well check" before he goes back to school. Turns out, in roughly 5 months, but little chunk has gone from 37.04 lbs to 43.5 lbs. His pediatrician came in and was "What happened???" I told him he just woke up one morning and he was a giant LOL He's holding his own at 41 inches tall. He's now actually on the chart LOL H'e in the 16% for his weight. He's only about 6 lbs less than the average 6 year old and about 6 inches shorter than average. For once, my little guy is about average :) The only "problem" with that is that his BMI has gone up about from 16.3 to 18.4. Am I worried about him being obese? Oh heck no. He has a pretty well rounded diet, albeit, if I let him, he'd eat his weight in cheese daily :) He's an active kid and with school starting, that's only going to increase. I'd say this crazy weight gain is gonna go in the WIN category for Super Nevets!