Moderate levels of exercise do not appear to affect milk production or impair infant growth.[1][2][3] However, intense or exhaustive exercise may temporarily alter milk composition (e.g., increased lactic acid and decreased secretory IgA concentrations), but milk composition usually returns to baseline within one hour postexercise. Moreover, infants can safely drink milk produced immediately postexercise despite the change in composition.[4]
How does physical activity affect lactation?
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•Last Updated: October 13, 2024