Apple Watch Health Age: What It Shows and How to See It

Apple Watch Health Age is Apple's new estimate of how your health metrics compare with your real age. It sits in the Longevity tab of a redesigned Health app on iPhone, and Apple says that app arrives later this year.

Health Age can use four Apple Watch signals. They are VO2 max, resting heart rate, sleep, and heart rate variability (HRV). You can also add lab results for A1c and LDL cholesterol.

You can see an age read from those same four signals today. Body Insights turns them into four named ages and their average, so you know which part of your health is pulling the number up or down.

Body Insights

See what changed in your Apple Health data.

Body Insights reads Apple Health data from Apple Watch and translates it into energy, recovery, and pacing guidance.

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What is Apple Health Age?

In Apple's words, Health Age shows how your "metrics are tracking relative to [your] chronological age." Chronological age is your birthday age.

Apple's launch images show a Health Age of -3.9 years next to the message "Build on Your Healthy Habits." So the result reads as a gap from your real age. A minus number means your metrics look younger than your age, and a plus number means they look older. (Apple Newsroom, September 9, 2026)

Health Age is one part of the new Longevity tab. That tab covers seven areas of long-term health. They are heart, sleep, mental wellbeing, movement, metabolic health, hearing, and nutrition.

What goes into your Health Age?

Apple lists four watch metrics and two optional lab tests. (Apple Newsroom)

Input	Where it comes from	Needed?
VO2 max (Cardio Fitness)	Apple Watch	Listed input
Resting heart rate	Apple Watch	Listed input
Sleep	Apple Watch	Listed input
HRV	Apple Watch	Listed input
A1c	Lab test you add	Optional
LDL cholesterol	Lab test you add	Optional

How do you find Health Age on your iPhone?

Health Age lives in the Longevity tab of the redesigned Health app. To see it, you need all of these:

An Apple Watch. Apple says, "Health Age requires Apple Watch."
The redesigned Health app, which Apple says arrives later this year
An iPhone that supports Apple Intelligence, running the latest software
US English at first, with more languages later

Apple also notes that some features need you to be 18 or older. (Apple Newsroom)

The new Health app is a separate release from iOS 27.

Apple's comparison page lists Health Age for 14 Apple Watch models, so most recent watches should qualify.

How is Health Age different from Fitness Age or Heart Age?

Health Age rolls several signals into one number. A single-system age uses one signal. That makes it easier to see what changed.

Estimate	Main Apple Watch input	Where you see it
Health Age	VO2 max, resting heart rate, sleep, HRV, plus optional labs	Apple Health, Longevity tab
Fitness Age	VO2 max (Cardio Fitness)	Body Insights
Heart Age	7-day average resting heart rate	Body Insights
Nervous System Age	HRV from the last seven days	Body Insights
Sleep Age	At least seven nights of sleep data	Body Insights

Apple Health shows your Cardio Fitness (VO2 max) value, and an app does the step of turning it into a Fitness Age. See our guide to fitness age on Apple Watch and our heart age app comparison.

See an age estimate now in Body Insights

Body Insights reads the same four kinds of Apple Watch data from Apple Health. It turns each one into its own age:

Fitness Age from VO2 max
Heart Age from resting heart rate
Nervous System Age from HRV
Sleep Age from your sleep

Open the Trends tab in Body Insights. The Average of four ages card gives each of those four estimates equal weight.

The card shows the average in years, your real age, and the gap between them as a plus or minus number of years. A chart shows the last five full months plus your current estimate.

The card appears once all four ages are ready. Until then, it says "Available when all four age estimates are ready." A month missing any one of the four stays blank.

Heart Age and Nervous System Age are premium features. Your first full Fitness Age view is free.

The useful part is the breakdown. When the average moves, you can open the four ages and see which one moved, then decide what to work on.

How should you read a plus or minus number?

Read the number over months, not days. A short run of poor sleep, illness, or a flare can pull your sleep and HRV readings older for a while. That shift reflects your recent data rather than lasting change.

Look at which part moved before you react. If your average climbed because Sleep Age rose after a hard week, the useful question is about rest. If Fitness Age slowly improved over a season, that change is more likely to hold.

If you live with a chronic condition, use an older result to plan lighter days and to spot patterns you can bring to your doctor. Don't use it to push harder on a day your body is asking for rest.