My son started Remicade in July, and at the time was in the 70th percentile for both his height and weight for his age. His body is responding well to the med. ESR and hemoglobin are normal, tough level is 8.8 (which I think might actually be a bit high), and no antibodies. My concern is his rather sudden weight gain. He gained 5 lbs between his Aug and Oct infusions, and another 5 lbs at his infusion yesterday. His height has increased minimally. He is now in the 90th percentile for weight, but still the 70th for height. He just turned 11 yrs old, and signs of puberty started about 6 months ago, so I'm hoping a growth spurt may be in the near future. His diet is healthy, and activity level is average for a boy his age. The GI and nurse are not concerned, but I am a little. Could the actual Remicade be causing him to gain weight?