Scientific Effect
Lutein is a carotenoid often found in green, leafy vegetables. It is integral to eye health and may also provide protection against the sun's damaging UV rays.
Clinical Study
Molecular evidence that oral supplementation with lycopene or lutein protects human skin against ultraviolet radiation: results from a double-blinded, placebo-controlled, crossover study.
Results
"Lutein could protect against solar radiation-induced health damage."
Study Citation
Grether‐Beck, S., Marini, A., Jaenicke, T., Stahl, W., & Krutmann, J. (2017). Molecular evidence that oral supplementation with lycopene or lutein protects human skin against ultraviolet radiation: results from a double‐blinded, placebo‐controlled, crossover study. British Journal of Dermatology, 176(5), 1231-1240.
LinkClinical Study
In patients with nonproliferative diabetic retinopathy, supplementation with lutein resulted in potential improvements in contrast sensitivity at low spatial frequency.
Results
"Effect of lutein supplementation on visual function in nonproliferative diabetic retinopathy."
Study Citation
Zhang, P. C., Wu, C. R., Wang, Z. L., Wang, L. Y., Han, Y., Sun, S. L., ... & Ma, L. (2016). Effect of lutein supplementation on visual function in nonproliferative diabetic retinopathy. Asia Pacific journal of clinical nutrition.
LinkClinical Study
Supplementation with the macular carotenoids (meso-zeaxanthin, zeaxanthin, and lutein) benefits patients with Alzheimer's disease, in terms of clinically meaningful improvements in visual function and in terms of macular pigment augmentation.
Results
"The impact of supplemental macular carotenoids in Alzheimer's disease: a randomized clinical trial."
Study Citation
Nolan, J. M., Loskutova, E., Howard, A., Mulcahy, R., Moran, R., Stack, J., ... & Owens, N. (2015). The impact of supplemental macular carotenoids in Alzheimer's disease: a randomized clinical trial. Journal of Alzheimer's Disease, 44(4), 1157-1169.
Link