Apple Unveils Hypertension Detection Alerts on Apple Watch in India

• Apple activates hypertension notifications for Watch users in India
• Feature uses long-term sensor data and machine learning to detect early signs
• Experts say it could improve early diagnosis and doctor–patient conversations

Apple has rolled out hypertension notifications for Apple Watch users in India, adding a major health feature aimed at spotting early signs of chronic high blood pressure. The tool works passively in the background, analyzing data from the Watch’s optical heart sensor to track how a user’s blood vessels respond with each heartbeat. If the system detects patterns linked to possible hypertension, it sends a notification encouraging users to take follow-up action.

Hypertension is one of the most common yet often undiagnosed health conditions worldwide. It affects around 1.3 billion adults and is a major risk factor for heart attacks, strokes, and kidney disease. Because the condition rarely shows symptoms, many people miss early warning signs. Apple’s new feature aims to close this gap by offering continuous monitoring through a wearable already used daily by millions.

Apple developed the system using advanced machine learning trained on data from more than 100,000 participants across multiple studies. A separate clinical study of over 2,000 people validated its reliability. While the feature cannot detect every case, Apple expects it to help identify more than one million undiagnosed users in the first year due to the device’s wide adoption.

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Health experts say the move could strengthen early screening efforts. Professor Dorairaj Prabhakaran of the Centre for Chronic Disease Control noted that integrating such detection into a widely used wearable can support better awareness and guide timely medical follow-ups.

Users who receive a hypertension notification are advised to monitor their blood pressure for seven days with a certified cuff and share the readings with a healthcare professional. This mirrors guidance from the American Heart Association and highlights that the Watch is an early-alert too, not a replacement for diagnosis.