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Vivian Pao, 34

Diseases and IllnessesDiabetes
Endocrinologist, St. Joseph Medical Center When people drop weight without trying, when their hearts race for no reason, when they've got the shakes or their thirst is weirdly unquenchable -- Vivian Pao might discover the reason in their hormones, a wayward thyroid. "People can't put a finger... Doug Kapustin, Special to The Baltimore Sun