https://pmc.ncbi.nlm.nih.gov/articles/PMC8861317/Zinc Intakes and Health Outcomes: An Umbrella Review https://pmc.ncbi.nlm.nih.gov/articles/PMC7995057/Potential health benefits of zinc supplementation for the management of COVID‐19 pandemic

https://pmc.ncbi.nlm.nih.gov/articles/PMC11813756/Association between vitamin levels and geriatric hip fractures: A cross-sectional study

https://pmc.ncbi.nlm.nih.gov/articles/PMC8874683/Lutein and Zeaxanthin and Their Roles in Age-Related Macular Degeneration—Neurodegenerative Disease https://pmc.ncbi.nlm.nih.gov/articles/PMC7692753/A Mechanistic Review of β-Carotene, Lutein, and Zeaxanthin in Eye Health and Disease https://pmc.ncbi.nlm.nih.gov/articles/PMC7352796/"Lutein Supplementation for Eye Diseases"

https://pmc.ncbi.nlm.nih.gov/articles/PMC11034594Magnesium-L-threonate treats Alzheimer’s disease by modulating the microbiota-gut-brain axis https://pmc.ncbi.nlm.nih.gov/articles/PMC11381753Magnesium-L-threonate improves sleep quality and daytime functioning in adults with self-reported sleep problems: A randomized controlled trial https://pmc.ncbi.nlm.nih.gov/articles/PMC3703169"The effect of magnesium supplementation on primary insomnia in elderly: A double-blind placebo-controlled clinical trial"

https://pmc.ncbi.nlm.nih.gov/articles/PMC9232232UC-II Undenatured Type II Collagen for Knee Joint Flexibility: A Multicenter, Randomized, Double-Blind, Placebo-Controlled Clinical Study https://pmc.ncbi.nlm.nih.gov/articles/PMC7222752Undenatured Type II Collagen (UC-II) in Joint Health and Disease: A Review on the Current Knowledge of Companion Animals