Mary McEniry says mid-20th century efforts to improve infant and child health in the developing world may be linked to increased risk of diabetes, obesity, and heart disease among the current elderly involved in these early-life interventions. Her study looked at historical and survey data on nearly 147,000 older adults in 25 countries of various income levels in Africa, Asia, the Caribbean, Europe, and North and South America, and is reported in her recent book.

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