A 10-month-old baby weighs as much as a nine-year-old at a massive four stone and 10 pounds.
Luis Manuel weighed a normal healthy weight when he was born at seven pounds and 11 onces, but since then he has piled on the pounds .
His parents suspect the tot, who has struggled to breathe because of his super rapid weight gain, suffers from Prader-Willi syndrome.
This is the same condition affecting Katie Price's son, Harvey, who weighs 18 stone.
It is a genetic disorder and means those affected are permanently hungry
2-His mother Isabel Pantoja said: "After only one month we noticed that clothes did not fit him and we had to dress him in clothes for a one-year-old, and even a two-year-old. "We saw our baby gain weight so fast. Sometimes, he could not sleep because he felt like he was suffocating due to his weight."
Luis' parents have now launched a fundraising campaign to pay for his treatment if his diagnosis is confirmed by doctors in Tecoman, Mexico
Treatment would consist of a series of hormone injections, with each one reportedly costing more than £400.
3-Doctors say Luis Manuel is currently the normal weight for a nine-year-old boy even though he is still two months short of his first birthday
Doctors in Tecoman say Luis Manuel would be the first ever recorded case of the condition in the city.
Mario Gonzalez, the boy's father, said he was worried about the health implications for his son
He said: "In some cases, kids have died because of a heart attack due to being so overweight."
4-The family have opened a bank account to enable well-wishers to donate towards his care and people can also contact Isabel Pantoja on social media.
Mr Gonzalez said the appeal would keep a proper record so people could see their money was being spent on Luis Manuel's treatment.
"All help given for him, small or big, is good for him," he said.
5-Loose Women star Katie Price revealed her heartbreak that her son, Harvey, was dangerously close to developing diabetes because of his condition.
She admitted it's an uphill battle controlling how much her teenage son eats.