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The ORAC scores actually measure only one type of antioxidant activity — the reactive oxygen species (or ROS, in short) that functions in the water-based compartments of the body. Along with many other water-soluble antioxidants, there are fat-soluble antioxidants as well.
For example, the carotenoid family of antioxidants includes beta-carotene, lycopene, luctein, canthaxanthin, and zeaxanthin, but these fat-soluble substances are not measured in the ORAC test.
In addition, the ORAC measurements are done in a test tube which is very different from the complex, constantly changing biochemistry of a living body. Even though ORAC has shortcomings, it is still a useful tool.
Some experts have suggested that people should consume about 5,000 ORAC units a day for maximum health benefits.
Based on what you eat every day, what is your ORAC score?
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