A Mexican baby boy weighs the same as a nine-year-old because he is constantly hungry.
Luis Manuel, 10 months, from Tecoman in the western Mexican state of Colima, tips the scales at a mammoth 4st 10lbs (30kg).
When he was just a month old he had to be dressed in clothes big enough for two year olds, because his waistline expanded 'so fast'.
Concerned medics fear the youngster has Prader-Willi syndrome - an incurable disorder that can trigger heart attacks in children.
The rare genetic condition causes problems including constant urges to eat food, restricted growth and reduced muscle tone.
His poverty-stricken family have launched a fundraising appeal so they can afford medical treatment for their son if the diagnosis is confirmed.
It's believed Luis could be the world's fattest baby, however, there are no records to confirm the suspicions.