Hello, Chitose here Just as the topic said, I'm I right? to believe that our body never gain weight more than weight of food we eat (and drink). 'cause mass won't come from nothing. we eat 100g of food, when it came out is less than that, part of it become our body mass (weight, height, etc) even drink also the same. I ask because my friend won't believe it. She try to diet, she says she eat vegetarian food (such as salad) for less calorie and high fiber, but she eat whole lot of it... and still fat... and... to control our body weight, which one is to considered most? calorie or amount? a single cup of instant noodle (High cal, low amount), and bowl of salad (Low cal, high amount) which one gonna make me fat? ......................................... English is not my native language, sorry if I'm wrong in spelling or gamma.