What is the effect of pregnancy and breastfeeding on the course of multiple sclerosis (MS)?

Updated: Oct 08, 2019
  • Author: Christopher Luzzio, MD; Chief Editor: Jasvinder Chawla, MD, MBA  more...
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Confavreux et al found that the frequency of MS relapses decreases during pregnancy, particularly in the third trimester, when it drops by as much as 70%. [121] In the first 3 months post partum, however, the frequency of relapses returns to the prepregnancy rate, probably as a result of postpregnancy hormone loss. Overall, pregnancy does not have a negative effect on the course of MS. Initial data suggested that breast-feeding reduced MS relapses, but the most recent study found no significant benefit. [122]

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