Just came across this article and thought to share:
Our analysis revealed that vitamin D supplementation significantly reduces total testosterone
This could explain why some are “feeling better” when supplementing Vitamin D. PFS patients not uncommonly find that increasing Testosterone makes them worse, while many anti-androgenic substances have been reported to improve PFS symptoms, at least transiently.
Since anti-androgens have gotten us here in the first place, further supplementing such substances should be considered carefully. It is possible that they can worsen the condition.