Examlex
read the paragraph below and indicate whether the athlete's statements are correct or incorrect:
A distance athlete explains why he is taking a vitamin E supplement. He states: "Most people don't realize it but oxygen has both beneficial and harmful effects. I try to counter the harmful effects by taking a vitamin E supplement. Most studies have shown that vitamin E supplementation has a positive effect on endurance performance. Besides, recent studies have shown that there is a health benefit to vitamin E supplements. I'm concerned that my vitamin E intake may be low since I purposefully keep my calorie intake low so I don't gain any body fat and I follow a low-fat diet. Someone told me that when you take high levels of vitamin E it actually has an opposite effect and it is no longer works as an antioxidant, but I don't think that is true."
-Recent studies have shown that there is a health benefit to vitamin E supplements.
Iris
The colored part of the eye surrounding the pupil, responsible for controlling the diameter and size of the pupil and thus the amount of light reaching the retina.
White
A color perceived when light contains all the wavelengths of the visible spectrum at equal intensity.
Colored Part
Referring to the iris, the colored portion of the eye surrounding the pupil that controls the amount of light entering the eye.
Cornea
The clear, transparent front covering of the eye that allows light to enter and contributes to the eye's focusing power.
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