Ava has been diagnosed with Prader-Willi syndrome (PWS), which causes her to be hungry all the time. She is also piling on calories which are difficult to burn off.
'She's not just permanently hungry - she's ravenous. If there's food on the floor, she'll pick it up and eat it, and if someone else has food she wants theirs too. She'll even take food away and hide it. It's scary because if we didn't watch her she'd eat until her she made herself sick - or in a worst case scenario her stomach could burst', explained Ava's mother.
Ava's parents are considering locking the fridge and cupboards when the girl grows up, to restrict her food intake.
Specialists have started her on a strict diet. According to support groups of this disease, PWS sufferers can get annoyed and begin to throw tantrums if they do not get food. This is a birth defect and is usually a life-long problem.