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Samsung Galaxy Watch 8 Gets Breakthrough Health Feature — Here’s What It Does

Samsung Galaxy Watch 8 introduces an all-new Antioxidant Index — a lab-grade health tracker that measures oxidative stress and helps users customize their diet and lifestyle.

Samsung Galaxy Watch 8 Gets Antioxidant Index: Industry-First Health Feature Explained

Samsung Galaxy Watch 8 Gets Breakthrough Health Feature — Here’s What It Does
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27 Oct 2025 1:02 PM IST

A big health upgrade is what Samsung is giving with its latest smartwatch series. The Galaxy Watch 8 series will be the first one in the industry to feature a revolutionary “Antioxidant Index” tracker, which is a blessing to those who want lab-grade health analysis on their wrist.

A New Milestone in Health Tracking

Samsung claims that it has taken a good number of years to come up with this advanced health tool, which would draw the line between clinical health equipment and consumer wearables very closely. The antioxidant index has been a domain of laboratories only for medical research and diagnostics, but the Galaxy Watch 8 is going to let ordinary users access it easily for the very first time.

What Is the Antioxidant Index?

The recent addition assesses the body’s antioxidant content — a parameter that signifies how efficiently your body is coping with oxidative stress, which is a major factor in aging, metabolism, and preventing diseases. People would then be able to make very good decisions regarding their health related to nutrition, diet, and living habits with the help of this new information.

How It Works

In the Watch 8 hardware, Samsung has placed special sensors that will be activated through a software update. After the activation, the sensors will use a specific algorithm to analyze the input data from the users and print elaborate health reports of the whole condition.

Combining the Watch 8 with Samsung Health, users can not only merge this new information with their fitness and wellness metrics but also can help to make personalized diet plans and keep an eye on changes due to age, medical conditions and activity levels along with monitoring the changes in the person's body.

Competing With Apple’s Health Ecosystem

This action is an indication of Samsung’s increasing desire to wrestle with Apple for the leading position in the wearable health technology market. The Korean company started this project in 2018 with a mission to make health monitoring through wearables more meaningful and accurate.

On one hand, the experts have been questioning the consumer-grade health data precision, whereas on the other hand, both Samsung and Apple have proven that the devices can be very helpful in providing early alerts and promoting the wellness awareness.

Will Older Watches Get It Too?

Currently, the antioxidant index function is only going to be available to the Galaxy Watch 8 series. But since Samsung is also planning to upgrade to the Watch 7 and Watch 6, which will be based on hardware compatibility, it is only a matter of time before they get the gold-standard antioxidant index feature too.

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