Kisspeptin

Kisspeptin binds to the KISS1 receptor (KISS1R) in the brain.

This stimulates the release of:

GnRH – Gonadotropin-Releasing Hormone

GnRH then signals the pituitary gland to release:

LH – Luteinizing Hormone

FSH – Follicle-Stimulating Hormone

These hormones influence ovarian and testicular function and downstream production of reproductive hormones.

In simple terms:

Kisspeptin → GnRH → LH & FSH → Reproductive Hormone Signaling

FERTILITY & OVULATION

• Ovulation signaling

• Egg maturation

• Reproductive hormone regulation

• Fertility treatment research

• Assisted reproductive technology

Kisspeptin has received particular interest as a potential method of triggering egg maturation during IVF treatment.

MALE REPRODUCTIVE HEALTH

Research has investigated its effects on:

• LH and FSH release

• Testosterone signaling

• Testicular function

• Reproductive hormone regulation

FEMALE REPRODUCTIVE HEALTH

Kisspeptin plays an important role in:

• Menstrual-cycle signaling

• Ovulation

• Estrogen-related feedback

• Reproductive hormone regulation

• Puberty and reproductive development

SEXUAL FUNCTION

Kisspeptin signaling also occurs in areas of the brain involved in sexual and emotional processing.

Early human research has investigated possible effects on:

• Sexual desire

• Sexual arousal

• Brain responses to sexual stimuli

• Reproductive behavior

This remains an emerging area of research.

Kisspeptin acts near the top of the reproductive hormone pathway.

Rather than supplying testosterone, estrogen, LH, or FSH directly, it signals the body's own reproductive hormone system upstream through GnRH.

This makes it an important research target for understanding fertility and reproductive endocrinology.

• Headache

• Flushing

• Nausea

• Dizziness

• Injection-site irritation

• Temporary changes in reproductive hormone levels

Long-term safety for repeated administration has not been fully established.

Kisspeptin is an important naturally occurring reproductive hormone, but administered Kisspeptin remains primarily a research tool and investigational therapy.

It should not be considered a proven treatment for low testosterone, infertility, low libido, or other hormone-related conditions outside appropriate medical care.