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A 19-year-old female asked:

during pregnancy, what makes your breasts increase in size?

2 doctor answers7 doctors weighed in
Dr. Heidi Fowler
Psychiatry 25 years experience
Breast Size: This occurs in response to hormonal changes in the body.
Dr. Anne Phelan-adams
A Verified Doctor commented
A US doctor answered Learn more
Interesting question. In addition to added fatty tissue, the milk glands expand considerably during pregnancy in preparation for breast feeding.
May 25, 2016
Dr. Ira Katz
A Verified Doctor answered
A US doctor answered Learn more
Hormonal Maturation: Actually a complicated answer. Starts at puberty->E2 causes a system of breast ducts to develop, then secretory glands that will store the milk develop by your first period & then group into sets of lobules. Each cycle progest causes these to enlarge (monthly breast pain), if no preg->back to nl. If preg E2/progest ↑->matures ducts/glands/lobules. FSH,LH,Prolactin,oxytocin,HPL->milk prod->↑ size.

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Similar questions

A 22-year-old member asked:

Is it normal to have leaky breasts while pregnant?

8 doctor answers18 doctors weighed in
Dr. Hetal Gor
Dr. Hetal Gor answered
Obstetrics and Gynecology 34 years experience
Yes: Yes, breasts can start leaking as soon as 5th or 6th month of the pregnancy.Avoid stimulating them.
A 44-year-old member asked:

Will my breasts get bigger in pregnancy?

2 doctor answers2 doctors weighed in
Dr. Padmavati Garvey
A Verified Doctor answered
A US doctor answered Learn more
Yes: Usually they do because of the hormones. This is in preparation for breastfeeding.
A 26-year-old member asked:

Is it normal for my breasts to leak in pregnancy?

2 doctor answers4 doctors weighed in
Dr. Jeff Livingston
Obstetrics and Gynecology 22 years experience
Yes: It is normal for some women to start lactating or making breast milk during the pregnancy. This is a perfectly normal physiologic process.
A 49-year-old member asked:

How do you dry the milk in your breasts after a pregnancy?

2 doctor answers5 doctors weighed in
Dr. Heidi Fowler
Psychiatry 25 years experience
Tips: Most often it will dry up when you stop breast feeding. Wear a supportive & comfortable bra. Don’t stimulate breasts. Can apply ice packs several times a day for 10 to 20 minutes at a time or use Acetaminophen or non-steroidal anti-inflammatory medication as needed.
A 35-year-old member asked:

What can cause liquid coming out of breasts other than pregnancy?

1 doctor answer2 doctors weighed in
Dr. Heidi Fowler
Psychiatry 25 years experience
Get medical eval.: Possible causes for galactorrhea include but are not limited to use of birth control pills, tricyclic antidepressants, antipsychotic meds, some sedatives, fennel, anise, fenugreek, some hypertension meds, cocaine, opioids, hypothyroidism, prolactinoma, renal dz, testosterone deficiency in men ; significant breast stimulation.

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Last updated May 2, 2017
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