Perimenopause has always been one of the biggest blind spots in women’s health.
Not because symptoms aren’t real — they are — but because women rarely get measurable data to understand what their body is doing.

Hot flashes.
Night sweats.
Mood dips.
Sleep chaos.
Stress reactivity.

These symptoms matter for quality of life — but they also matter for bone density, muscle maintenance, metabolism, and long-term health.

And until now, the tools women had for tracking perimenopause were mostly limited to:

None of which provide real physiological insight.

That’s why a lot of people are paying attention to Peri, a first-of-its-kind wearable specifically built to detect and decode perimenopause symptoms. It opened U.S. preorders on November 11, 2025 and ships this December.

We didn’t test it ourselves — but the technology behind it, and the early reviews from CES and national media, are significant enough that it deserves a spotlight.
Especially because perimenopause is one of the most important phases for bone health.

Unlike general-purpose wearables, Peri is designed for the hormonal transition years — a period when women experience rapid shifts in:

Peri’s sensors and AI engine specifically track:

For the first time, women get objective measurements for symptoms doctors often rely on guesswork to evaluate.

One of the most powerful features is Peri’s ability to measure the physiology of a hot flash, including:

This matters because vasomotor symptoms aren’t just uncomfortable — they’re connected to:

A wearable that helps women understand their patterns could be a major advantage in managing everything downstream — especially sleep and energy.

Anyone who works in bone health or longevity sees the same thing again and again:

Poor sleep → more stress → more inflammation → less recovery → weaker bones → slower progress.

ILM Aesthetics & Wellness has been working hands-on with women through this phase for years, and they’ve seen how dramatically sleep and stress affect hormone balance.

At OsteoStrong, we see the downstream effects too:

Peri may not “fix” sleep, but it helps illuminate why sleep is disrupted — and that insight alone can help women make changes, seek support, or better understand their body’s patterns.

Mood and emotional shifts are extremely common in perimenopause.
Not because women are “being dramatic,” but because fluctuations in estrogen and progesterone influence:

Peri doesn’t diagnose mood disorders — but it tracks patterns like:

These often correlate with irritability, anxiety spikes, or emotional sensitivity.

This helps women see:
“This isn’t in my head — this is a physiological pattern.”

That kind of validation is powerful.

At OsteoStrong, we focus on measurable strength, bone density, and musculoskeletal resilience.

And perimenopause is the most important bone decade of a woman’s life.

Here’s why:

Women can lose 5–20% of bone mass during the menopausal transition.

Sleep plays a direct role in bone remodeling via growth hormone and cortisol.

Cortisol impacts bone-building hormones and slows recovery.

Estrogen is bone-protective — and it swings wildly for years before menopause.

Muscle is one of the biggest protectors of bone density.

So while Peri isn’t a bone health tool…
understanding your physiology during this phase supports every aspect of a bone-building journey.

And that makes it relevant to anyone on an OsteoStrong or longevity path.

We didn’t test Peri ourselves — but several early reviewers and health journalists did.
Their reactions included:

Many women don’t realize how many “micro flashes” they sleep through.

HR spikes often precede wake-ups.

The body shifts before the calendar does.

Especially on sleep quality and nighttime temperature.

These insights match what ILM’s practitioners see clinically — but Peri adds quantitative data instead of subjective recall.

Peri uses:

And unlike most wearables, it’s not trying to track everything.

It’s laser-focused on the signals that define perimenopause.

That’s what makes it different.

Peri doesn’t:

What it does is give women visibility into a part of their health that has traditionally been invisible.

And for women who are working with ILM Aesthetics, functional medicine providers, hormone specialists, or who are optimizing strength and bone density through OsteoStrong, this kind of data could become a powerful companion.

It brings clarity.
It brings context.
It brings patterns you can actually do something with.

This is Part 1 of a 3-part exploration of the new wave of perimenopause tech.

The first algorithm designed to detect which stage of perimenopause a woman is in — using temperature and biometrics.

The most precise “signal vs noise” detection available today for hormonal transitions.

These tools aren’t perfect — but they’re the biggest step forward we’ve seen in years.

1. IdentifyHer Press Release (PR Newswire)
“Introducing Peri: The First Wearable That Detects And Decodes The Symptoms of Perimenopause” (Nov 11, 2025)

2. The Verge
Coverage of Peri’s CES 2025 debut and feature set.

3. NewBeauty Magazine
Feature article on Peri’s approach to vasomotor symptom tracking.

4. Natural Menopause Foundation & WHO Data
General statistics on perimenopause prevalence and symptom impact.