Luis Manuel Gonzales was born in Mexico 10 months ago.
He weighed seven and a half pounds - a fairly regular weight for a newborn baby.
However, once Luis started growing, he didn't stop.
When he was two months old, the baby already weighed 22 pounds.
And now that he's 10 months old, Luis weighs a largely unheard of four and a half stone.
https://twitter.com/IBTimes/status/929986000713142272
The baby's mother, Isabel Pantoja, told AFP that she initially thought Luis was gaining so much weight because she had "good breast milk."
However, now the 10-month-old's parents are worrying that their child's weight gain could be linked to a medical condition known as Prader-Willi Syndrome.
The condition often leads to increased appetite, low muscle tone, heart problems, and delayed brain development.
