'A teenager is believed to be the first in the UK to go deaf and blind due to his junk food diet, a report has warned.
The 17-year-old lived off a daily portion of chips, crisps, white bread and processed meat for around a decade.
His poor diet, which resulted in a number of vitamin deficiencies, led to the boy developing a condition called nutritional optic neuropathy (NON).
More commonly seen in malnourished children in developing countries, purely dietary causes of NON are rare in the western world.
It manifests in damage to the optic nerve, which leads to sight loss and if undiagnosed, blindness.
The unnamed patient, from Bristol, also developed hearing loss and bone weakness.
Since primary school he suffered from a rare eating disorder, avoidant-restrictive food intake disorder (ARFID).
Sufferers become sensitive to taste, texture, smell or appearance of certain foods. He had previously told doctors he did not like the “texture” of fruit and vegetables.
Dr Denize Atan, of University Hospitals Bristol NHS Foundation Trust, who co-authored the report published in Annals of Internal Medicine, and treated the patient, said there is a lack of awareness among healthcare professionals and the public about the link between poor diet and sight loss.
“What’s unusual about this case is the extreme picky eating and the fact it had gone on for quite some time, that the diagnosis had been missed and the visual loss had become permanent,” Dr Atan told The Daily Telegraph.
“The link between poor nutrition and vision has been known about for quite some time, at least among specialists in neuro-ophthalmology. The problem is that awareness among other health professionals isn’t quite so high.”
Scientists have previously raised concerns that the majority of British diets are increasingly made up of poor quality, processed foods.'
Read more: Teenager 'first in UK' to go deaf and blind due to junk food diet, report reveals
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