Last year at this time she was 70 pounds. I am worried there is another cause for so much weight gain .She eats healthy and we still make all of their meals and snacks, so i know what she is eating. She eats a lot of fruits and vegetables, drinks milk, for snacks we have goldfish, pretzels, fruits, Triscuits with hummus etc. that I usually portion out. She is 53 inches tall and weighs about 90 pounds. She has a twin brother who eats the same as she does, but has only gained about 5 pounds this past year. My biggest worry is her health and if there could be any other cause for such a big weight gain or is this normal? Thank you!