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The true story of a boy born with no brain is to be shown as a documentary on Channel 5.

Brave disabled lad Noah Wall is to be the subject of a new documentary titled The Boy With No Brain which will air Tuesday 12 October.

Little Noah was born with just two per cent brain function and spina bifida in 2012, but he has stunned medical professionals by surviving this long and now his family will document his progress.

The four-year-old's condition left him paralysed from the chest down and in need of a permanent head drain to keep fluid off his brain, but miraculously scans showed his brain is now almost fully functional and has been growing.

(Image: Channel 5) (Image: Channel 5)

Doctors at Newcastle’s Great North Children’s Hospital had never expected such a result and now Noah’s documentary charting his journey from having virtually no brain function, to one that virtually fully functions will be viewed by all.

Parents Shelly, 44, and Rob, 50, from Abbeytown, Cumbria, were warned their unborn son was unlikely to survive birth, after it became apparent he was missing a back quarter of his brain and were told to expect him to be paralysed.

According to the Chronicle , Noah refused to give up and has now defied all the medical odds. The scans of his brain are now being used by medical researchers to help increase understanding about spina bifida.

(Image: Channel 5)

(Image: Channel 5)

(Image: Channel 5)

Mum-of-three Shelly said: "They have no idea if his brain function will grow even further but they are astonished by what they have seen so far."

Despite his incredible progress, Noah relies on a special wheelchair, known as a Zip-Zac, to get around. The low-lying chair costs £1,000 and was, last year, at the centre of some controversy when the Wall family paid a visit to Harrods in London.

Shelly was left shocked when she was stopped from taking Noah into the department store because security staff did not believe the wheelchair was genuine.

Noah’s sister, Steph, 23, picked him up and showed the security man that his legs didn’t work and the store later offered an apology for their "unintentional error in judgement".

The family then used money donated to the youngster to purchase two similar chairs for Ward 1B of the Great North Children’s Hospital in Newcastle.

"The chair has given Noah a real sense of independence," said Shelly. "From one year old he has been able to move about of his own free-will, which has been incredibly important to him.

(Image: newcastle chronicle)

"We wanted to be able to give other children in the same position that sense of independence."

Shelly said: "These chairs are becoming more common place now and they are so important for children in Noah's position."

The youngster can also move about using special braces which are attached to his legs.

Shelly and Ron say they are amazed at just how far their little boy has come after undergoing six operations.

"We know he will face more surgery," said Shelly. "But he is such a remarkable little boy who has already come so far."

The Boy With No Brain airs Tuesday 11 at 10pm on Channel 5