This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer
Evidence-Based Benefits
Enhanced MPOD — the CREST study found that a three-carotenoid formula (10 mg meso-zeaxanthin, 10 mg lutein, 2 mg zeaxanthin) increased MPOD significantly more than lutein/zeaxanthin alone over 12 months
Foveal center protection — meso-zeaxanthin is the dominant pigment at the epicenter of the fovea, providing the last line of antioxidant defense for cone photoreceptors
Visual performance — supplementation with all three macular carotenoids improved contrast sensitivity and glare disability in the CREST AMD study
Antioxidant synergy — meso-zeaxanthin is a more potent singlet oxygen quencher than either lutein or zeaxanthin individually
What the Research Says
Meso-Zeaxanthin is a carotenoid that plays a critical role in eye health and cognitive function. Research from the CREST studies demonstrated that a three-carotenoid formula, including meso-zeaxanthin, significantly increased macular pigment optical density (MPOD) compared to two-carotenoid formulas. Nolan et al. (2016) found that this triple formulation improved contrast sensitivity and visual performance in patients with age-related macular degeneration (AMD). Additionally, a 2016 meta-analysis by Ma et al. involving 938 AMD patients and 826 healthy subjects confirmed that supplementation with lutein, zeaxanthin, and meso-zeaxanthin significantly enhances MPOD levels.
Beyond its role in eye health, meso-zeaxanthin has been shown to have broader benefits. A systematic review by García-Romera et al. (2022) of 19 studies highlighted that higher dietary intake of lutein and zeaxanthin improves cognitive functions such as memory, processing speed, attention, and reasoning in adults. Furthermore, Stringham et al. (2024) reported that supplementation with these carotenoids reduces inflammatory cytokines (IL-1β and TNF-α) and oxidized LDL, suggesting potential cardiovascular benefits.
In the context of cognitive health, Power et al. (2022) conducted a randomized clinical trial involving 60 older adults and found that a combination of omega-3 fatty acids, carotenoids, and vitamin E improved working memory over 24 months. Similarly, Nolan et al. (2022) demonstrated in a study of 77 mild-moderate Alzheimer's disease patients that daily supplementation with carotenoids, omega-3s, and vitamin E not only slowed disease progression but also enhanced skin and blood nutrient levels.
Overall, meso-zeaxanthin is increasingly recognized as an essential component of comprehensive macular and cognitive supplementation, supported by robust evidence from multiple clinical trials.
RCTNolan JM, Power R, Stringham J, et al. (2016). Enrichment of Macular Pigment Enhances Contrast Sensitivity in Subjects Free of Retinal Disease: Central Retinal Enrichment Supplementation Trials — Report 1. Investigative Ophthalmology & Visual Science. DOIPubMed
RCTAkuffo KO, Nolan JM, Howard AN, et al. (2015). Sustained supplementation and monitored response with differing carotenoid formulations in early age-related macular degeneration. Eye. DOIPubMed
Meta-analysisMa L, Liu R, Du JH, Liu T, et al. (2016). Lutein, Zeaxanthin and Meso-zeaxanthin Supplementation Associated with Macular Pigment Optical Density.. Nutrients. DOIPubMed
RCTStringham NT, Green M, Roche W, Prado-Cabrero A, et al. (2024). Lutein, zeaxanthin, and meso-zeaxanthin supplementation attenuates inflammatory cytokines and markers of oxidative cardiovascular processes in humans.. Nutrition, metabolism, and cardiovascular diseases : NMCD. DOIPubMed
RCTPower R, Nolan JM, Prado-Cabrero A, Roche W, et al. (2022). Omega-3 fatty acid, carotenoid and vitamin E supplementation improves working memory in older adults: A randomised clinical trial.. Clinical nutrition (Edinburgh, Scotland). DOIPubMed
RCTNolan JM, Power R, Howard AN, Bergin P, et al. (2022). Supplementation With Carotenoids, Omega-3 Fatty Acids, and Vitamin E Has a Positive Effect on the Symptoms and Progression of Alzheimer's Disease.. Journal of Alzheimer's disease : JAD. DOIPubMed
García-Romera MC, Silva-Viguera MC, López-Izquierdo I, López-Muñoz A, et al. (2022). Effect of macular pigment carotenoids on cognitive functions: A systematic review.. Physiology & behavior. DOIPubMed
Show 5 more references
Loughman J, Loskutova E, Butler JS, Siah WF, et al. (2021). Macular Pigment Response to Lutein, Zeaxanthin, and Meso-zeaxanthin Supplementation in Open-Angle Glaucoma: A Randomized Controlled Trial.. Ophthalmology science. DOIPubMed
Addo EK, Gorusupudi A, Allman S, Bernstein PS (2021). The Lutein and Zeaxanthin in Pregnancy (L-ZIP) study-carotenoid supplementation during pregnancy: ocular and systemic effects-study protocol for a randomized controlled trial.. Trials. DOIPubMed
Davey PG, Henderson T, Lem DW, Weis R, et al. (2020). Visual Function and Macular Carotenoid Changes in Eyes with Retinal Drusen-An Open Label Randomized Controlled Trial to Compare a Micronized Lipid-Based Carotenoid Liquid Supplementation and AREDS-2 Formula.. Nutrients. DOIPubMed
Power R, Coen RF, Beatty S, Mulcahy R, et al. (2018). Supplemental Retinal Carotenoids Enhance Memory in Healthy Individuals with Low Levels of Macular Pigment in A Randomized, Double-Blind, Placebo-Controlled Clinical Trial.. Journal of Alzheimer's disease : JAD. DOIPubMed
Stringham NT, Holmes PV, Stringham JM (2018). Supplementation with macular carotenoids reduces psychological stress, serum cortisol, and sub-optimal symptoms of physical and emotional health in young adults.. Nutritional neuroscience. DOIPubMed
