Strong ingredient science behind AREDS2 (10mg lutein + 2mg zeaxanthin), but Eye Formula (5mg), LifePak Elements (2.7mg), and ageLOC Youth (4mg) each sit below that dose; Nu Skin's own material assumes product-stacking to approach it. Structure/function only, not AREDS2-equivalent.
How it works
Sense — concentrates in the macula and filters high-energy blue light before it reaches photoreceptors
Maintain — quenches reactive oxygen species in the lipid-rich retina and in neural (occipital cortex) tissue where it also accumulates
Perceive — raises macular pigment optical density, mechanistically tied to glare recovery and visual processing speed
Process — brain lutein status correlates with cognitive processing speed in observational research, though this is not proof of causation
Form matters
The same nutrient can be made in very different forms — and a study done on one form does not automatically apply to another. Methylcobalamin is not cyanocobalamin; magnesium glycinate is not magnesium oxide; a whole-food extract is not the synthetic isolate that was studied. Two things decide whether what is in the bottle behaves like the research: the exact form, and independent lab verification (a Certificate of Analysis) that the form and dose on the label are truly what is inside. Without a COA, you are trusting a label, not the science.
Across your systems
Lutein and zeaxanthin are the only two dietary carotenoids the retina actively concentrates into macular pigment, and a portion of consumed lutein is locally converted into meso-zeaxanthin within the eye itself -- the reason the two are formulated and studied together rather than as separate, unrelated antioxidants.
Works well with
The science on Lutein
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