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The number of pregnant women who are diagnosed with gestational diabetes is on the rise--recent data from the CDC reported that 1 in 10 pregnant women has the condition.  Those women may be relieved to learn of a small but promising new study that has found that taking certain supplements--vitamin D and calcium, specifically--can actually lower blood sugar readings and improve other measures of metabolic health that can suffer with gestational diabetes.

Image: Pregnant woman holding supplements, via Shutterstock