Stress during pregnancy may affect baby's immune system

From NBC12 News

A new report from researchers at Harvard suggests that women who worry or are under stress tend to give birth to babies who are predisposed to allergies and asthma.

Doctor say maternal stress could lead to changes in a baby's developing immune system during pregnancy, potentially causing lasting problems for the child.

Researchers say the findings support the idea tat stress can be thought of as a kind of "social pollutant."

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