Apple is expanding users’ ability to track their health data with the new hypertension notifications feature on the Apple Watch. This feature is available on the Apple Watch Series 9, Series 10, and Apple Watch Ultra 2 with the watchOS 26 update.

watchOS 26 introduces hypertension notifications

Based on a new algorithm, the Apple Watch analyzes data collected from the heart sensor and detects signs of hypertension. For these notifications to work, the feature must first be configured in the Health app on iPhone.

The watch begins a 30-day data collection period before sending a hypertension alert. If signs of high blood pressure are detected within these 30 days, the user is sent a notification.

When an alert is received, the user begins a 7-day monitoring period. During this period, the Apple Watch sends daily reminders to measure their morning and evening blood pressure. Users can manually save these measurements, along with their systolic and diastolic blood pressure values, in the Health app.

This data collection process continues for a 7-day or 4-week period to detect hypertension or monitor an existing condition.

Apple states that this feature is designed for individuals aged 22 and over, who are not pregnant, and who have not previously been diagnosed with hypertension. The company does not recommend using the feature for users who do not meet these criteria.

Apple also emphasizes that this feature is not a medical diagnostic tool and should be used only as a warning mechanism. Not everyone with high blood pressure will receive notifications, and the feature is not a medical diagnosis, treatment, or management tool.