# Meno Peptides: the unwritten menopause chapter

> Meno Peptides | The unwritten menopause chapter — Meno Peptides follows kisspeptin and bremelanotide through desire, appetite and bone research, asking where menopause appears in the actual studies.

A menopause question brought me into these papers. The words describing who took part turned out to be the most revealing.

## Premenopausal women

The [large bremelanotide trials that improved desire and reduced desire-related distress](https://pubmed.ncbi.nlm.nih.gov/31599840/) enrolled **premenopausal** women with hypoactive sexual desire disorder, or HSDD. A menopause question deserves a menopause answer; that prefix sets a boundary on the claims I can draw from their result.

Meno Peptides starts at that unfinished edge. Kisspeptin and bremelanotide have led me to very particular places in the published experiments: a questionnaire about desire, a blood marker of bone formation, a meal whose size stayed the same. I prefer those particularities to the roomy suggestion of a peptide for a life stage.

## Desire, bone and appetite

[Sexual desire](/sexual-desire) begins with [bremelanotide](https://pubmed.ncbi.nlm.nih.gov/31599840/), and the difference between a change in a desire score and an enjoyable experience. The trials provide something substantial to discuss; their population also gives that discussion a boundary.

[Bone turnover](/bone) follows an [acute kisspeptin experiment in healthy men](https://pubmed.ncbi.nlm.nih.gov/35244717/). Its measurements are intriguing enough to deserve a close look, even though I arrived hoping to learn about a different population.

[Appetite](/appetite) reaches the dining table. In [women with overweight or obesity, kisspeptin left hunger and measured food intake unchanged](https://pubmed.ncbi.nlm.nih.gov/37039248/) despite a hormonal response. That quiet result earns a prominent place here.

## The reproductive signal

Kisspeptin has a stranger history than a menopause label would suggest. [KISS1 first emerged from melanoma research](https://pubmed.ncbi.nlm.nih.gov/8944003/); [human genetics later established its receptor as essential to reproductive maturation](https://pubmed.ncbi.nlm.nih.gov/14573733/). Then experiments found that [a strong initial hormone response could fade with repeated exposure](https://pubmed.ncbi.nlm.nih.gov/19820030/).

The [discovery and response chapter](/kisspeptin-signals) follows those turns. I think the fading response is especially valuable: it gives the appealing idea of a reproductive switch some actual biological texture.

## Menopause research

A [review of sexual-dysfunction pharmacotherapy separates premenopausal and postmenopausal care](https://doi.org/10.1007/s11920-022-01322-7). That distinction seems a sensible place to begin a site with this name.

My ambition for the subject is quite ordinary: studies that enrol postmenopausal women and measure the outcomes being discussed. Until then, there is plenty to examine in the results already on the page, without filling the empty margin with certainty. The [reading list](/references) collects the studies and reviews discussed here.

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At Meno Peptides I pursue the unfinished menopause chapter in published research, with curiosity to spare and no medical advice to offer.