One of the great lessons many of us learn from an early age is how to keep a balanced diet, but now we have another unexpected reason to do so. CNN reported that the teenager's unhealthy diet, consisting of only Pringles, white bread, french fries and processed ham and sausage, eventually blinded him.

The road to this discovery begins when the teenager is 14 years old and visits a doctor with complaints of fatigue. He showed no signs of malnutrition and all doctors found that vitamin B1

2 and anemia were deficient. The young man was treated with injections, but his health continued to decline.

By the age of 17, the teenager was completely blind and also had some hearing loss. Eventually, the University of Bristol made their scientists review the patient's history and condition and found that the teen had undergone nutritional optic neuropathy. This optic nerve dysfunction is associated with vitamin B12 deficiency at the age of 17, along with many other problems.

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Usually this condition is reversible if caught early, but in this case, for example, the patient was too late. While this is still an extreme case, Denise Atan of Bristol Medical School said it really does bring something to light. "This case highlights the impact of diet on visual and physical health and the fact that calorie intake and BMI are not reliable indicators of nutritional status," says Atan.

Remember to eat your vegetables, children, as researchers say this condition may become more common in the future.