The closest thing I've seen is the antioxidant index from Samsung's latest Galaxy Watch: https://www.mobihealthnews.com/news/samsung-debuts-galaxy-watch8-series

The closest thing I've seen is the antioxidant index from Samsung's latest Galaxy Watch: https://www.mobihealthnews.com/news/samsung-debuts-galaxy-watch8-series-new-health-features https://www.mobihealthnews.com/news/samsung-debuts-galaxy-wa... It specifically measures carotenoids through the optical heart rate sensor -- you mostly get carotenoids from eating vegetables, and they do reduce inflammation.