(CNN)Eating a diet of French fries, Pringles and white bread was enough to make one teenage boy lose his sight, according to a case study published in a medical journal.
Scientists from the University of Bristol examined the case of a young patient whose extremely picky eating led to blindness, and have warned of the dangers of a poor diet.
The unidentified patient told doctors he had only eaten fries from the fish and chip shop, Pringles potato chips, white bread, slices of processed ham and sausage since elementary school, and he avoided foods with certain textures. He first visited a doctor at age 14, complaining of tiredness, according to a case report published in the Annals of Internal Medicine on Monday.
His vision had worsened to the point of blindness by 17 years of age, and doctors identified vitamin B12 deficiency, low copper and selenium levels, a high zinc level, reduced vitamin D level and bone level density, according to a statement from the University of Bristol.
By this stage, vision damage was permanent.
Eat your veggies, kids.