Stress, kisspeptin, and functional hypothalamic amenorrhea

Functional hypothalamic amenorrhea (FHA) — the loss of menstrual periods due to stress, excessive exercise, or inadequate nutrition — affects a significant number of women and can have lasting consequences for bone health and fertility. This review by Meczekalski, Niwczyk, Bala, and colleagues, published in Current Opinion in Pharmacology, examined the role of kisspeptin in this condition.

The authors analyzed the evidence linking stress-induced kisspeptin suppression to the development of FHA. They reviewed how various forms of physiological and psychological stress converge on kisspeptin neurons to inhibit reproductive hormone signaling, and they assessed the potential for kisspeptin-based treatments to restore normal function.

The evidence clearly demonstrated that chronic stress suppresses kisspeptin signaling in the hypothalamus, which in turn reduces GnRH pulsatility and leads to the cessation of normal menstrual cycling. This kisspeptin suppression appears to be a central mechanism through which stress impacts reproductive function, making it a logical therapeutic target.

For women experiencing FHA, kisspeptin therapy represents a promising approach that addresses the root cause of the condition rather than simply providing hormone replacement. By restoring the natural kisspeptin signal that stress has suppressed, therapeutic kisspeptin could help re-establish normal menstrual cycling and preserve fertility in a more physiological manner than conventional treatments.