05/21/2026
Vitamin D plays a bigger role in fertility than many people realize because it affects hormones, ovulation, egg quality, implantation, and even s***m health.
Here are some of the main ways low vitamin D may affect fertility:
•Ovulation: Vitamin D receptors are found in the ovaries. Low levels may contribute to irregular ovulation or worsen conditions like Polycystic O***y Syndrome.
•Hormone balance: It helps regulate reproductive hormones including estrogen and progesterone.
•Egg quality: Some studies suggest adequate vitamin D is linked to better egg development and ovarian reserve.
•Implantation: The uterine lining contains vitamin D receptors, and healthy levels may help an embryo implant successfully.
•Male fertility: Vitamin D may support s***m motility and testosterone production.
•Mental Health: There’s especially strong research linking deficiency with symptoms of Major Depressive Disorder and seasonal depression, although not everyone with low vitamin D develops depression.
