⚠ Strong evidence exists, but dose is below effective threshold
One of the weaker points: Dose is likely below clinically useful levels.
Scientific evidence
Ma et al. meta-analysis lutein/zeaxanthin and age-related macular degeneration
British Journal of Nutrition • 2012
PMID: 26447482.0
Ma et al. RCT lutein supplementation and macular pigment density
Investigative Ophthalmology & Visual Science • 2009
PMID: 16723441.0
