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In 2002, a well-intentioned but flawed study upended medical care for middle-aged women. It suggested that hormone therapy, then the gold standard to treat menopausal symptoms, led to higher risks of breast cancer, heart attacks and strokes. (Leana S. Wen, 5/14)

Physicians Frederick Banting and John MacLeod declined to be listed on the patent for insulin in 1923; their co-inventors Charles Best and James Collip sold the patent to the University of Toronto for $1. But despite the discoverers’ efforts to make insulin available and cheap for everyone, it has today become the poster child for soaring pharmaceutical prices. (Robin Feldman, 5/15)