Kisspeptin.

In adults with excess body weight, epigallocatechin gallate was reported to lower serum kisspeptin alongside triglycerides and blood pressure. That is a hormone concentration measured in blood, a marker rather than a reproductive outcome, and the direction was downward. Anyone using the two together should regard the interaction as modulating rather than additive.

Zinc is required for normal function of the hypothalamic pituitary gonadal axis that kisspeptin sits at the top of, and low zinc status is associated with reduced gonadotrophin and gonadal steroid signalling. Kisspeptin drives the GnRH pulse; zinc supports the downstream steps that pulse depends on. No trial has given the two together, so this is mechanism, not a measured combination.

A review of dietary influences on pubertal timing describes gut microbiota derived short chain fatty acids, butyrate among them, as inputs to hypothalamic kisspeptin signalling. The evidence there is mechanistic and largely preclinical. It supports a plausible route by which colonic fermentation products reach the axis, not a demonstrated effect in people.

Live cultures shift which fermentation products the colon produces, and the same review names microbiota derived short chain fatty acids and neurotransmitters as modulators of the kisspeptin axis. Species and strain matter and none has been tested against kisspeptin in humans. Early mechanism only.

Selenium is a cofactor for glutathione peroxidases that limit peroxide damage in gonadal tissue, and a scoping review of antioxidant supplementation in mammalian ovarian tissue models catalogues this class of protection in experimental systems. Kisspeptin acts upstream in the brain, selenium acts on the tissue that responds. The pairing is complementary in theory and untested in people.

Tocopherols appear among the lipid soluble antioxidants used in experimental ovarian tissue work reviewed in 2026. The role is protection of membrane lipids in the responding tissue rather than any action on kisspeptin receptors. Experimental models, not human evidence.

Nitric oxide made from arginine participates in the hypothalamic control of GnRH release, the step kisspeptin drives. Arginine supplies the substrate for that signalling molecule. Nothing has measured the two together, and arginine has its own separate effects on growth hormone, so keep this at the level of a shared pathway.

Vitamin D receptors are present in hypothalamic, pituitary and gonadal tissue, so vitamin D status is one of the background conditions the kisspeptin driven axis operates in. That is a permissive relationship rather than a direct interaction with KISS1R. No combination data exist.