They sell worldwide, often retailing for more than $2.50 per two-ounce bag: Lactation cookies, which manufacturers purport to increase milk in people who breastfeed. Many claim they work—but what does the science say?
But do they work? Researchers investigate effectiveness of lactation cookies on human milk production

Research scientist with gloves holding blood sample on glass in laboratory. Biology doctor analyzing plasma dna for medical discovery in pharmaceutical industry. Science equipment on desk
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