Dr. Lisa narrates an animation of the effects of breastfeeding on breast tissue. More from this episode.
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Question on, what happens with breast feeding, basically, you have these lobules in your breast. They are connected by these milk ducts. What happens is, the milk is stored in the lobules and made from the secretions of fluids from the blood stream and a hormone called Pitocin actually causes the muscles around the lobules to contract and that produces milk. That's what happens during breast feeding.

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