Ethinylestradiol Transfer into Breast Milk of Women Using Low-Dose Combined Hormonal Contraception Is Negligible
Lior Segev, Avigail Ben Zimra, Gideon A Weitzman, Naamah Bloch, Itay Pitussi, Tatiana Alkhazov, Natalya M Kogan, David Peleg, Abraham O Samson, Inbar Ben Shachar · 2025
Read Ethinylestradiol Transfer into Breast Milk of Women Using Low-Dose Combined Hormonal Contraception Is Negligible by Lior Segev, Avigail Ben Zimra, Gideon A Weitzman, Naamah Bloch, Itay Pitussi, Tatiana Alkhazov, Natalya M Kogan, David Peleg, Abraham O Samson, Inbar Ben Shachar (2025) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-12702262.txt.
Description
Lior Segev and co-authors measure, in a 2025 study, how much of a contraceptive hormone passes into breast milk at today's low doses. Older studies of this transfer used doses near fifty micrograms, higher than the thirty five or less now common. That leaves nursing mothers and clinicians with dated numbers for modern products.
The study included fourteen breastfeeding women using combined hormonal contraception. Six used pills at varied low doses, seven used a vaginal ring, and one used a skin patch. Eight nursing women using no hormones served as controls. Each gave a small milk sample and a background form. The samples were dried, extracted, and read by a precise mass spectrometry method. The title gives the verdict: transfer at these doses was negligible. That finding can ease counseling for mothers who wish to nurse while using these methods.
Catalog record
| CREATOR | Lior Segev, Avigail Ben Zimra, Gideon A Weitzman, Naamah Bloch, Itay Pitussi, Tatiana Alkhazov, Natalya M Kogan, David Peleg, Abraham O Samson, Inbar Ben Shachar |
|---|---|
| YEAR | 2025 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 26 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |