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By Mayo Clinic staffMany alternative therapies — including beta glucans, bitter melon, cassia cinnamon, ginseng, gymnema and stevia — have been touted as possible ways to treat or prevent type 2 diabetes. However, there's no conclusive evidence that any of these alternative therapies are effective.
If you're considering dietary supplements or other alternative therapies to treat or prevent prediabetes, consult your doctor. He or she can help you weigh the pros and cons of specific alternative therapies.