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Women's health tech worth your time. Each story in a few lines, why it matters, and a link to the full piece.

A gold hoop earring worn with the Naomi clasp behind the lobe — LEAD STORY

SEP 2026Stanford News

Researchers build the first daily map of menstrual-cycle biometric signals

Using 1.2 million days of wearable data from 2,596 women across 42,759 cycles, Stanford researchers charted how resting heart rate, HRV, breathing rate, skin temperature and blood oxygen move day by day through the cycle. Shorter sleep went with a higher resting heart rate, and longer cycles showed bigger swings. The study is published in npj Digital Medicine.

Why it matters The cycle is the context for your vitals. That's exactly what Naomi is built around.

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13 OCT 2026Healthcare Digital

Google and Flo Health team up on wearables

Google announced a multi-year partnership with Flo Health, the period-tracking app with more than 80 million monthly users, alongside a strategic investment. From early 2027, users who consent can connect Flo with Google Fitbit, and the two plan joint women's health research and new products.

Why it matters Big tech now sees cycle-aware data as core, not a niche feature.

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7 JUL 2026Archives of Women's Mental Health

Wearable HRV tracks premenstrual symptoms across the cycle

193 women wore a fitness tracker for one to two cycles (293 cycles in total), 68 of them with premenstrual disorders. In both groups HRV fell before the period and rose afterwards, but the recovery was smaller in women with premenstrual disorders, and lower HRV after the period went with worse symptoms in that group.

Why it matters HRV from a wearable can follow how you actually feel through the month.

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27 MAY 2026News-Medical

Wearables may help spot menstrual health changes earlier

A scoping review of 40 studies in npj Women's Health found digital tools largely confirm, and sharpen, what lab studies knew about the cycle. Wearables showed resting heart rate rising about 2.7 to 3.9 bpm from the follicular to the luteal phase, and the follicular phase running longer than older lab studies suggested.

Why it matters A few beats higher before your period is normal, and worth knowing.

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22 APR 2026FutureFemHealth

Women's health wearables 2026: a full-body map

A report mapping women's health wearables across the body. Smart ring shipments grew 49% in 2025 against 6% for smartwatches, and women make up 59% of Oura's customers. The authors stress that wearables shouldn't replace clinical judgement or be used as stand-alone diagnostic tools.

Why it matters Women are choosing smaller, more discreet devices. Insights, not diagnoses.

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