Rhonda Patrick· PhD
People with higher levels of lutein/zeaxanthin (high in kale) had better memory recall while using less brain power.
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
People with higher levels of lutein/zeaxanthin (high in kale) had better memory recall while using less brain power.
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Kale contains high amounts of lutein & zeaxanthin, which increases neural processing speed & efficiency in people.
aside from being high in magnesium kale is also a really good source of lutein and zeaxanthin which are 2 carotenoids that are highly concentrated in the retina of the eye these carotenoids serve two very important functions in the eye one is they filter out singlet oxygen which is produced by blue light from the Sun and is very damaging to the rods and cones in the eye the second is that lutein and zeaxanthin also have antioxidant activity this is how they've been shown to protect against several different types of age-related macular degeneration lutein and zeaxanthin also have been shown to slightly enhance visual performance