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Three months of goji berry intake increased skin carotenoid score at Day 45 and Day 90 compared to Day 0. No changes in the lutein and zeaxanthin supplement (LZ) group were noted. Statistical analysis performed by mixed models using time and treatment as the main factors, and age and sex as the covariates with student t-test for pairwise comparisons; boxplots are the median and interquartile range.
