WHO Review Links Smoking to 1.4x Higher Infertility Risk in Women

A WHO systematic review of studies from 2000-2026 finds female smokers face a 1.4 times higher risk of infertility, translating to a 21% absolute risk versus 15% for non-smokers. The finding reinforces established causality but adds updated quantitative evidence. This may inform public health policy and smoking cessation campaigns, though it is not a market-moving development.