10 Supplements That Do Not Work as Advertised

Chromium to Treat Type 2 Diabetes
Glucose testing is a routine part of life for many people with type 2 diabetes. © Piotr Adamowicz/iStock/Thinkstock

More than 8 percent of Americans have type 2 diabetes -- that's just shy of 26 million people. Many of those people rely on blood sugar (glucose) testing and medications such as insulin, biguanides (including the brand name Metformin) and DPP-4 inhibitors (including brand name Januvia) to keep themselves healthy [source: NDEP]. What if you could improve your blood sugar levels -- whether diagnosed with type 2 diabetes or not -- with a mineral supplement, instead?

Chromium is a mineral your body uses to control its glucose levels. Because of this, it's easy to extrapolate that if you supplement your diet with chromium you'll prevent or control your diabetes. Marketing got something right, right? Well, maybe not right at all. Studies offer conflicting evidence about the effectiveness of chromium supplements to prevent or treat diabetes. For every report finding that chromium supplements do have a measurable positive impact on your glucose levels, another will find no benefit at all to the supplementation.

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