Premature Baby Facts That Gave Us Hope
Shared in the hope they help you too.
When Theo was born at 28 weeks and 4 days, weighing 600 grams, one of the first things I remember is the wall.
Saint Mary's NICU in Manchester had photographs on the wall of babies who had been born there. Premature babies, all of them, with their weights listed underneath. I looked at every single one. And there was not a single baby on that wall as small as Theo.
Oh my god. Theo is smaller than every baby on this wall. Is he going to survive?
So we started searching. Not for medical information, we had enough of that. We searched for anything that might tell us it could be okay. Any fact, any story, any name that might make what we were feeling bearable enough to get through the next hour.
This page is what we found, and what we have found since. Some of these facts were there for us while Theo was in Saint Mary's. Others we have come across in the years since he came home. We are sharing all of them because I know exactly what it feels like to be sitting in a NICU at two in the morning searching for something to hold onto, and I want you to have these without having to go looking the way we did.
As Theo grew stronger and his weight crept up, we used to tick him off against the babies on that wall. Each one he passed was a moment of relief. A little more confidence that he was getting stronger. A little more belief that he was going to be okay.
He came home at 4 pounds 4 ounces, around his original due date, after 101 days in Saint Mary's. Every one of these facts was already true before that day.
First of All — You Are Not Alone In This
Before anything else, I want you to know this. Six babies are born prematurely in the UK every single hour. Every hour, another family walks into a NICU for the first time and feels what you are feeling right now. Around 60,000 premature babies are born in the UK every year, which is 1 in every 13 births. Globally, more than 1 in 10 pregnancies ends in premature birth.
While Theo was in Saint Mary's there were other families on that same ward going through the same thing. There were families in hospitals across the country. And as we discovered during those weeks in the NICU, it was happening to people we would never have expected. More on that below.
You are part of a community of millions of families who have been exactly where you are. That does not make it easier. But it matters.
One of the first things I needed when Theo was born was an answer to a question I could not quite bring myself to ask out loud. How small is too small? What is the very edge of what is possible?
These records helped answer that. I am sharing them in two parts. The records that already existed when Theo was in Saint Mary's, which are the ones that were available to us at the time. And the records that exist today, for families reading this now.
Both categories cover two things. How early a baby was born, and how much they weighed. Because those are the two numbers every NICU parent knows by heart.
James Elgin Gill — The Record That Existed When Theo Was Born
Born 1987 in Ottawa, Canada. World record holder for 33 years.
- Born
- 20 May 1987, Ottawa, Canada
- Gestation
- 21 weeks and 5 days — 128 days premature
- Weight at birth
- 624g (1lb 6oz)
- What doctors said
- He had no chance of survival
- Record held
- 1987 to 2020
- When Theo was born
- James was a healthy man in his thirties
In 1987, a baby boy was born in Ottawa at 21 weeks and 5 days. His skin was still developing. His eyes were fused shut. His parents were told he had no chance of survival. His name was James Elgin Gill and he proved every one of those doctors wrong. He grew up healthy and held the Guinness World Record as the most premature baby ever to survive for 33 years. When Theo was in Saint Mary's in 2017, James was a thirty year old man.
That was one of the things that helped. Not a possibility. Something that had already happened, thirty years before Theo was born.
Guinness World Records. Ottawa Citizen, June 2017. Wikipedia.
Nash Keen — The Record That Exists Today
Born 2024 in Iowa, USA. The most premature baby ever to survive.
- Born
- 5 July 2024, Iowa, USA
- Gestation
- 21 weeks exactly — 133 days premature
- Weight at birth
- 285g (10oz) — less than a can of fizzy drink
- Chance of survival given
- 0%
- Days in NICU
- 198
- Went home
- January 2025
- First birthday
- July 2025 — Guinness World Record confirmed
James Elgin Gill's record was eventually broken several times between 2020 and 2024 as neonatal medicine continued to improve. The current record holder is Nash Keen, born on 5 July 2024 at exactly 21 weeks, weighing 285 grams. His doctors gave him a 0% chance of survival. He spent 198 days in NICU, went home in January 2025, and celebrated his first birthday in July 2025. His parents describe him as the most determined, curious, happy baby you will ever meet.
The record has moved from 21 weeks and 5 days in 1987 to 21 weeks exactly in 2024. Neonatal medicine is getting better. We are sharing Nash's story so families going through this today have it.
Guinness World Records (confirmed July 2025). University of Iowa Health Care. Today.com, Fox News.
Theo weighed 600 grams at birth. When I found out what the lightest surviving baby on record weighed, it was one of those moments where something shifted. Because 600 grams, as frightening as it felt, was not the outer edge. Not even close.
Rumaisa Rahman — The Record That Existed When Theo Was Born
Born 2004 in Chicago, USA. Weighed 260 grams. A teenager when Theo was in NICU.
- Born
- 19 September 2004, Chicago, USA
- Gestation
- 25 weeks and 6 days
- Weight at birth
- 260g (9.2oz)
- Twin sister
- Hiba, born the same day, weighing 580g
- Record held
- 2004 to 2018
- When Theo was born
- Rumaisa and Hiba were healthy thirteen year old girls
In 2004, twin girls were born in Chicago at 25 weeks. The smaller twin, Rumaisa, weighed 260 grams. Her twin sister Hiba weighed 580 grams. Hiba weighed 580 grams. Theo weighed 600 grams. Almost exactly the same weight, born thirteen years apart.
Rumaisa held the Guinness World Record as the lightest surviving baby in history until 2018. When Theo was in Saint Mary's, both girls were healthy teenagers. A baby who weighed 580 grams had already been through this and was fine. That was already true before Theo took his first breath.
Guinness World Records. Loyola University Medical Center. Pediatrics journal, 2011. Boston Globe, Time magazine.
Kwek Yu Xuan — The Record That Exists Today
Born 2020 in Singapore. Weighed 212 grams. Home after 13 months.
- Born
- 9 June 2020, Singapore
- Gestation
- 24 weeks and 6 days
- Weight at birth
- 212g (7.48oz) — roughly the weight of an apple
- Cause of early birth
- Pre-eclampsia — emergency C-section
- Months in NICU
- 13
- Weight at discharge
- 6.3kg — healthy and thriving
- Record
- Guinness World Record — lightest surviving baby ever recorded
The current record holder is Kwek Yu Xuan, born in Singapore in June 2020 weighing 212 grams — roughly the weight of an apple. She spent thirteen months in NICU and went home in July 2021 weighing a healthy 6.3 kilograms. The weight record has moved from 260 grams in 2004 to 212 grams in 2020. And Hiba, Rumaisa's twin, who weighed almost exactly what Theo weighed, grew up too.
Guinness World Records (confirmed August 2021). National University Hospital Singapore. BBC, CNN.
The records helped answer the question of how small a baby can be and survive. But there was another question underneath that one. Not whether a baby this small could make it, but what they could go on to become.
When Theo was born at 600 grams, we were frightened not just about whether he would survive, but about what his life might look like if he did. Would he face health challenges? Would he be limited in ways we could not yet see? That fear sits alongside the fear of losing them, and it is not talked about enough.
Tyson Fury
World Heavyweight Boxing Champion. Born in Manchester. Weighed one pound.
- Born
- 12 August 1988, Wythenshawe, Manchester
- Gestation
- Approximately 33 weeks — seven weeks premature
- Weight at birth
- 1 pound (approximately 450g)
- What happened
- Died three times in the NICU incubator — not expected to survive
- Named after
- Mike Tyson — because his father saw a fighter from the first moment
Tyson Fury was born in Manchester weighing one pound. Seven weeks early. His father John had already lost two daughters to premature birth. When this tiny baby showed signs of fighting, John named him after the heavyweight champion of the world. Not as a hope. As a statement of what he already saw.
Tyson died three times in the incubator. Three times the NICU team brought him back.
"When I put my hand on his small frame, I could feel the life in him. I said to the doctor — he will make it."
John Fury, BBC SportThat one pound Manchester baby grew to six feet nine inches and became the first British boxer to hold all four major world heavyweight titles simultaneously. He came back from mental health struggles and years away from the sport, in a comeback most people in boxing said could not happen, and reclaimed the world title anyway.
The reason Tyson Fury helped was the weight. One pound. 450 grams. Theo was 600 grams. And hearing that someone born even smaller than our baby could go on to become a world champion — with no limits, no ceiling — gave us real hope. Not just that he might survive. But that if he made it through, there was no reason to put a limit on what he could become.
John Fury, BBC Sport, December 2018. Paris Fury, Parenting Hell podcast (Rob Beckett and Josh Widdicombe), 2021.
The NICU does not distinguish between the famous and the unknown. The wires look the same. The monitors sound the same. The fear of not knowing what comes next is the same for everyone who sits beside that incubator.
David Silva
Manchester City legend and ten year Premier League player. And someone whose family was going through the same thing as ours, at exactly the same time.
- Child
- Son Mateo Silva
- Born
- December 2017, Valencia, Spain
- Gestation
- 25 weeks — 15 weeks premature
- Time in hospital
- Five months
- His own words
- "The toughest, most difficult period of my life"
- That season
- Manchester City won the Premier League
While Theo was in Saint Mary's, the news broke that David Silva's son Mateo had been born prematurely in Valencia, Spain, at 25 weeks. Silva was one of the most recognisable footballers in the country. And here he was, going through exactly what we were going through.
That was the moment it really landed for us. That this can happen to anyone. It does not matter who you are, what you do, or what your life looks like from the outside. A premature birth does not pick and choose. Seeing it happen to someone so publicly, at exactly the same time as us, made us feel less singled out by it.
Silva missed time during City's title winning season to travel back to Spain and be with Mateo. Pep Guardiola told him from the start that he was free to go whenever he needed to, that family came before football. Silva has spoken since about not knowing how he kept playing through that period. He was not sleeping or eating properly. He made frequent trips between Manchester and the hospital in Valencia. He has described it as the toughest months of his life.
"I don't know how I played on last season and I ask myself that sometimes. Maybe it was a form of release when I was out on the field, where you would just put things to one side."
David Silva, ESPNMateo came home in May 2018. When he was finally well enough to come to the Etihad Stadium, Silva carried him onto the pitch for his 250th Premier League appearance and scored a free kick. He called it the perfect day.
And then something else happened
Around the same time we were following Mateo's story in the news, there was word that morning that some footballers were coming in to visit the ward. Players from both Manchester City and Manchester United came to Saint Mary's NICU. Theo was there. I was there. James was not there that day.
I do not really follow football closely, and when they arrived I had no idea who most of the players were. Kyle Walker from Manchester City was one of them. Ander Herrera from Manchester United was another. I had to send James the photographs later so he could tell me who they were. He is a Manchester United fan and was not exactly pleased to have missed it.
We do not know exactly how the visit came about, or whether it was in any way connected to what was happening with Silva's family at the time. But it made us feel seen. In a place where it is very easy to feel invisible and frightened and alone, having people come in and acknowledge that you were there, that your baby was there, meant more than we expected.
David Silva: BBC Sport, Sky Sports, ESPN (2018), Silva's own public statements. NICU visit: Rachael Kavanagh, Saint Mary's Hospital Manchester, December 2017.
Ben and Sarah Mee
Premier League footballer, Burnley and Brentford. And the reason so many families going through this feel less alone.
- Child
- Daughter Olive Grace Mee
- Born
- May 2020
- Gestation
- 24 weeks and 4 days — 16 weeks early
- Weight at birth
- 1lb 2oz (510g) — the weight of a tin of beans
- Weeks in NICU
- 16
- Went home
- September 2020
Ben and Sarah Mee's story came after ours. But it belongs on this page because of one thing Ben said when he chose to speak publicly about what they had been through.
"We looked online for positive stories and struggled to find any."
Ben Mee, BBC Radio 5 LiveThat is exactly why we built Simply Preemie. Ben and Sarah went through sixteen weeks in NICU with their daughter Olive, born at 24 weeks and 4 days and weighing the same as a tin of beans. When Olive came home, they chose to speak out. Not for attention, but because they had searched for a positive story at their lowest point and could not find one. They did not want the next family to feel the same way.
Olive came home in September 2020, just before her original due date. She started walking not long after her first birthday. Ben spoke at the launch of Tommy's National Centre for Preterm Birth Research in 2024, not as a footballer, but as a dad who wanted things to get better for families coming after him.
If you are searching right now for a positive story and struggling to find one, we hope this page is it.
BBC Radio 5 Live. BBC Breakfast, World Prematurity Day 2021. The Sun. Tommy's National Centre for Preterm Birth Research launch, March 2024.
Questions Families in NICU Often Ask
What is the most premature baby to have survived?
Nash Keen, born on 5 July 2024 at exactly 21 weeks gestation in Iowa, USA, currently holds the Guinness World Record. He weighed 285 grams at birth and was given a 0% chance of survival. He spent 198 days in NICU and went home in January 2025. Before Nash, the record was held for 33 years by James Elgin Gill, born in Ottawa, Canada in 1987 at 21 weeks and 5 days. James is alive and well today.
What is the lowest birth weight a baby has survived with?
Kwek Yu Xuan, born in Singapore in June 2020, holds the Guinness World Record with a birth weight of 212 grams. She spent 13 months in NICU and went home weighing a healthy 6.3 kilograms. Before her, the record was held by Rumaisa Rahman, born in Chicago in 2004 weighing 260 grams, who grew up alongside her twin sister Hiba. Hiba weighed 580 grams at birth, almost exactly the same as our son Theo.
Was Tyson Fury born premature?
Yes. Tyson Fury was born approximately seven weeks premature on 12 August 1988 in Manchester, weighing just 1 pound, around 450 grams. His father John Fury spoke about the birth on BBC Sport in December 2018, describing feeling the life in his son and telling the doctors he would make it. Tyson died three times in his NICU incubator and was not expected to survive. He grew up to become World Heavyweight Boxing Champion.
Did David Silva have a premature baby?
Yes. David Silva's son Mateo was born at 25 weeks in December 2017 in Valencia, Spain, and spent five months in hospital. The news broke publicly at the time, and it was something many NICU families, including ours, followed closely. It was a reminder that premature birth can happen to anyone. Around the same time, players from Manchester City and Manchester United visited the NICU at Saint Mary's Hospital in Manchester, where our son Theo was being cared for. Mateo came home in May 2018.
How common is premature birth in the UK?
More common than most people realise. Six babies are born prematurely in the UK every hour. Around 60,000 premature babies are born in the UK every year, which is 1 in every 13 births. Globally, more than 1 in 10 pregnancies ends in premature birth.
Can premature babies go on to live completely normal lives?
Yes, and the stories on this page are evidence of that. Outcomes depend on gestation, weight, and individual circumstances, and the medical team caring for your baby is the right place to start for guidance on what to expect. But James Elgin Gill was born at 21 weeks in 1987, given no chance of survival, and was a healthy thirty year old man by the time our son was born. Rumaisa Rahman weighed 260 grams at birth and grew up alongside a twin sister who weighed almost exactly what Theo weighed. Tyson Fury was born at one pound in a Manchester NICU and became World Heavyweight Champion. Premature babies have a way of surprising everyone around them.
Your Baby's Story Is Still Being Written
Some of the things on this page were there for us while Theo was in Saint Mary's. James Elgin Gill, a thirty year old man who started life at 21 weeks. Rumaisa's twin sister Hiba, who weighed almost exactly what Theo weighed and grew up fine. Tyson Fury, one pound, a Manchester NICU, no limits on what he became. David Silva's story breaking in the news at exactly the same time as ours, and then the players arriving on the ward, and the quiet comfort of feeling seen in a place where it is very easy to feel invisible.
Other things on this page came later. Nash Keen and Kwek Yu Xuan, whose records did not exist when Theo was born but who we are sharing because we want families reading this today to have them. Ben and Sarah Mee, who searched online at their lowest point for a positive story and could not find one, and then became that story for everyone who came after them.
When I looked at that wall of photographs on the day Theo arrived and could not find a single baby as small as him, I felt completely alone in something I did not know how to face. What I know now is that there is a map. Other families have been here. Other babies have been this small, and smaller, and they have been okay.
When Theo finally came home after 101 days, we thought — he made it. It felt like we were over the hardest part. The challenges were not over, and we knew that. But coming home was enormous. It was real. It was worth every single day of fighting to get there.
Theo is the reason Simply Preemie exists. And your baby's story is still being written.