The youth told doctors he had only eaten fries, Pringles potato chips, white bread, slices of processed ham, and sausage since elementary school, and he avoided foods with certain textures. Doctors identified vitamin B12 deficiency, low copper, and selenium levels, a high zinc level, reduced vitamin D level, anemia, and low bone density. The researchers say that poor diet and reduced intake of minerals caused vision loss in this case, and warn that nutritional optic neuropathy could become more common due to the rise in consumption of junk food. -GEG

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.