Combined Hormonal Contraception with Low-Dose Ethinylestradiol is Associated with Modest Reduction of Breast Milk Volume when Administered Vaginally, but Not Orally.
Segev L; Weitzman G; Hijazi B; Shrem G; Hochler H; Burke Y; Samson AO; Srebnik N · 2026 · Breastfeeding medicine : the official journal of the Academy of Breastfeeding Medicine
WASTE classifies this as Negative / Null Result Report · AI classification, approximate
The study found no significant effect — useful as a negative control or null benchmark for your own design.
Abstract (excerpt)
Background Combined hormonal contraception (CHC) is habitually not prescribed to breastfeeding women due to concerns of decreased milk production. This habit is based on inconclusive studies that examined lactation suppression of CHC with…
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Metadata source: Europe PMC · DOI 10.1177/15568253261450161