Many moms with PCOS have no problems with breastfeeding, but recent research is showing that mothers with PCOS are at greater risk for insufficient milk supply. On the other hand, about one-third of women with PCOS report problems with oversupply (perhaps this is connected with the hyperprolactinemia – elevated prolactin levels – that occurs in about 20% of moms with PCOS).
Polycystic ovarian syndrome and breastfeeding, from the Australian Breastfeeding Association
Polycystic Ovary Syndrome (PCOS) and Breastfeeding by Nancy Howat BSc (Hons), and Hilary Jacobson, CH.HU.SI.
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Insulin resistance and lactation insufficiency: FAQ by Diana Cassar-Uhl, MPH, IBCLC
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Hale TW, Kristensen JH, Hackett LP, Kohan R, Ilett KF. 
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