LNG-IUD and breast cancer: Number 2 – 2026
Mariane Nunes de Nadai; Carolina Sales Vieira; Cristina Falbo Guazzelli; Milena Brito; Zsuzsanna Ilona Katalin de Jármy Di Bella; Ilza Monteiro · 2026 · Revista Brasileira Ginecologia e Obstetrícia
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
Key points• Breast cancer is the most common type of cancer among women worldwide.• There is concern regarding the use of hormonal contraceptives and their possible relationship with the risk of breast cancer.• Several studies have evaluated the association between hormonal contraceptives and breast cancer, achieving heterogeneous results.• Some observational studies and systematic reviews suggest an association between levonorgestrel intrauterine device (LNG-IUD) use and breast cancer.However, these findings are limited by confounding factors and methodological weaknesses in the studies.• Whe
Abstract by Mariane Nunes de Nadai; Carolina Sales Vieira; Cristina Falbo Guazzelli; Milena Brito; Zsuzsanna Ilona Katalin de Jármy Di Bella; Ilza Monteiro, Revista Brasileira Ginecologia e Obstetrícia (2026) — licensed CC BY 4.0.
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Metadata source: OpenAlex · DOI 10.61622/rbgo/2026fps2