The protective effect of vitamin D on ovarian reserve and anti-mullerian hormone in patients undergoing chemotherapy for breast cancer, a randomized phase ΙΙ clinical trial.

Despite a minimal rise in the AMH level after six months of chemotherapy, the study could not demonstrate any protective effect of vitamin D on patients' ovarian reserve undergoing chemotherapy for breast cancer. Further larger studies are needed to evaluate the effect of vitamin D supplements on ovarian reserve beside optimal dose and duration.