A woman in her early 40s lost her vision after having weight-loss surgery, Livescience.com reports.
The woman visited an ophthalmology clinic in Texas because she was having vision problems and eye pain. She had also developed lesions on her eyes, according to an article in the March 31 JAMA Ophthalmology.
These symptoms are typical of severe Vitamin A deficiency, which is rare in the United States. But the type of weight-loss surgery the woman had — a "duodenal switch" — creates a bypass around a section of the small intestine, which is also where the nutrients in food are absorbed into the body.
Shortening the small intestine lowers the amount of calories and nutrients the body can absorb from food. It can also significantly lower the level of vitamins, including vitamin A.
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