Insurers Are Already Pricing Sleep and HRV Data. Most Policyholders Have No Idea.

A resting heart rate that has averaged 54 beats a minute since March. Eleven weeks of consistent seven-hour sleep. An HRV trend that keeps climbing.

That is not a cardiologist's chart. That is a Whoop, Oura, or Apple Watch app. It sits on the nightstand of half the executives commuting out of Scarsdale and Rye.

Life insurers know it is there. Some of them are already building pricing models around it.

Reinsurers RGA and Munich Re have published on wearable-informed underwriting for close to a decade. Vitality-linked programs, the most mainstream version of the idea, already tie real premium discounts to activity data off a wrist.

What changed in the past year is the metric being chased. The industry is moving past step counts into resting heart rate, sleep quality, and HRV. That is the exact data type sitting unused in most Westchester nightstand apps right now.

What Changed in the Last Year

For most of the wearable-underwriting era, this meant one thing: step counts, tallied against activity thresholds.

That changed in August 2025. Consulting giant WTW and UK health-data firm Klarity announced a joint underwriting model. It draws on 12 years of health data spanning six million life years.

The model scores resting heart rate, heart-rate recovery, sleep quality, and activity levels together. Not steps alone.

WTW's Mary Bahna-Nolan described the goal as letting predictive analytics and behavioral health indicators redefine risk assessment. The firm tested the model against U.S. NHANES health survey data.

It says the model segments risk more precisely than the cholesterol-and-blood-pressure framework insurers have leaned on for decades.

That is a research partnership, not a line item on every application form. Surveys of accelerated underwriting practices still describe carriers as assessing wearable data, not adopting it broadly. For now.

Vitality Is Still the Only Program Actually Charging Premiums Off It

Skip past the pilot studies and one program is already pricing real premiums off real wearable data: Vitality.

In the US, John Hancock's Vitality PLUS ties up to 25% in annual premium savings to sustained engagement. That means syncing a device, hitting activity targets, and completing an annual health screening, across a full policy year. The savings are attached to consistency, not a strong final month before renewal.

In the UK, Vitality's ActiveLife product goes further still. It recalculates part of the premium every month directly from Apple Watch data, what the company calls an "Active Premium." That is the version of wearable underwriting an affluent Westchester household actually encounters today, not a reinsurer's research model.

Why Sleep and HRV, Not Steps, Are the Metrics That Matter Now

The mortality math behind this predates the current wearable boom. RGA's 2018 knowledge-center research is still cited across the industry. It found that every additional 1,000 daily steps corresponded to a 6% reduction in mortality risk.

Every 10 beats-per-minute decline in resting heart rate tracked to a 4% to 9% drop in all-cause mortality. Sleep showed the same curve shape.

Seven hours a night sat at the low-risk point. Five hours pushed mortality risk up 10%. Nine hours pushed it up 14%.

That is why sleep and HRV, not steps, are the metrics insurers are chasing now. A step count says someone moved. A resting heart rate trend and a sleep pattern say something closer to how a cardiovascular system holds up under load, which is closer to what a mortality table is trying to predict.

Check Your Own Wearable Data Profile

The categories below are the same ones a wearable-linked underwriting model weighs. This is a self-check, not a quote. No insurer sees what you enter here.

The Accuracy Problem the Industry Undersells

None of this works if the underlying data is noise, and consumer wearables are not medical devices.

A 2025 validation study in Physiological Reports, led by researcher Michael Dial, tested five popular wearables against a clinical reference monitor overnight. Resting heart rate came out close enough to matter.

The best device measured within about 2% of the reference. Even the weakest tracker tested landed within roughly 5 beats per minute, a margin the researchers called clinically acceptable.

HRV was a different story. Error rates ranged from about 6% on the best device tested to more than 16% on the weakest one.

That is not a rounding error. That is the difference between a rising trend and a flat one, read off two different wristbands on the same arm.

RGA flagged a version of this problem back in 2016, in its own five-country fitness tracker study: two devices worn by the same people, in the same weeks, produced step counts that differed by thousands. Ten years later, the metric changed from steps to HRV. The underlying lesson has not.

What Regulators Have Not Settled Yet

More than half of US consumers say they would share wearable data with a life insurer for a more tailored policy: 54.5%, in a 2024 GlobalData survey. Regulators are still catching up to that appetite.

The NAIC's Privacy Protections working group is drafting amendments to its model privacy act, expected to reach public comment in early 2026. The group has flagged biometric and other non-traditional data specifically.

Its concern: consumers often do not understand how that data affects their risk classification. It may not carry the same legal protections as a traditional medical exam, either.

None of that is settled law yet. It is a live drafting process, not a rule already on the books.

Before Your Next Westchester Policy Renewal

Scarsdale, Rye, Bronxville, and Chappaqua households often buy seven-figure policies for estate liquidity or a family business buy-sell agreement. Today, none of them are having raw wearable data pulled into that underwriting file.

Large, fully underwritten policies still run on paramedical exams, blood panels, an MIB check, and a prescription history. Those are the same inputs that have priced jumbo life insurance for decades.

What's live right now is the discount layer, not a wearable-based replacement for underwriting. If a Vitality-linked policy is on the table, sustained engagement over a full policy year is what the discount is priced on, not a strong month before renewal. If your carrier does not offer that kind of program, the sleep and HRV data already sitting in your Oura or Whoop app does not touch your premium today.

The more useful question for a family office is not "will my wearable get me a discount." It is "what does my carrier's underwriting file actually contain, and does anything in a wearable-linked program feed into it beyond the discount calculation." Ask in writing. Carriers do not volunteer the answer.

Related: the HRV wearable stress monitor category and HRV tracking and career longevity cover the device landscape underneath this.

Where This Goes Next

Expect the discount layer to expand before the underwriting layer does. Vitality-style programs are cheap for insurers to run and easy for a policyholder to opt into. That is exactly why they are the version that exists today.

The harder move is different: folding a continuous HRV or sleep-quality feed into the core mortality assessment on a jumbo policy. That is still sitting in reinsurer research decks and pilot partnerships like WTW and Klarity's. It will not stay there indefinitely.

When it moves, the households with the largest policies and the most wearable history already on file will be the first ones affected. Read the fine print before the wearable data does the talking for you.

Last updated August 2026. This article is not insurance, financial, or legal advice. It is editorial commentary on emerging underwriting and pricing practice.

Specific underwriting criteria, discount structures, and data-use policies vary by carrier and change without notice. Consult a licensed insurance professional and qualified counsel before making decisions about a specific policy.