My sister is autism she is 11years old she eat a lot and we can't stop her her weight is between 60-70kg what can i do?

Whoever is in charge: Of her food supply has to limit her choices to healthy foods, usually requiring changes in the family eating habits, & limit accessibility by locking the refrigerator & cabinets. A genetic microarray (cgh) blood test can yield answers @ her food-seeking behavior. Her doctor can check her blood pressure & labs for diabetes, high cholesterol, fatty liver & metabolic syndrome & treat accordingly.

It depends : Some children are on medication that increase the appetite and the weight. A small percentage of those with autism have a genetic disorder in which food seeking behavior becomes a major drive. Some seek certain foods because of the way they feel after they are consumed, almost like an addiction. Keep healthy, non- processed foods in the house as these are less likely to be the source of cravings.