Vitamin D deficiency in a subfertility population and the impact of <scp>COVID</scp>‐19 lockdowns

Our findings demonstrate a high prevalence of suboptimal vitamin D levels in a subfertility population, with significant seasonal fluctuations and notable socioeconomic disparities. Despite initial concerns, COVID-19 lockdown measures did not appear to adversely affect overall vitamin D status. These results support the incorporation of routine vitamin D screening in infertility evaluations and the implementation of targeted supplementation, particularly in economically vulnerable groups and during winter months.