Vitamin D supplementation linked to nearly one extra dominant follicle per cycle in a meta-analysis — but the same study found no effect on a key marker of ovarian reserve.
- 2026
- Meta-Analysis
- Revista da Escola de Enfermagem da U S P
This is one of the first meta-analyses to look at vitamin D and follicle count, so the finding is intriguing but far from settled — especially since a core measure of egg supply (AMH) didn't budge.