Research ties metformin to cognitive impairment in diabetes

09/10/2013 | MedPage Today (free registration)

Australian researchers found diabetes patients on metformin treatment showed worse cognitive performance than nonusers, and patients whose vitamin B12 levels were less than 250 pmol/L exhibited similar impairment. However, taking vitamin B12 supplements may help ease cognitive impairment caused by metformin-induced B12 deficiency in such patients, researchers wrote in Diabetes Care.

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