Daily supplementation with 2,000 IU of vitamin D slows the rate of telomere shortening, preserving telomere length equivalent to delaying ~3 years of biological aging over four years., Telomeres are Effect of Dietary Ketoglutarate Supplementation on the Performance, Gut Health, Gene Expression, Antioxidant Capacity, and Hematology in Broilers Foods With L Glutathione: Avocado, Watermelon, and More GoodRx Liposomal Glutathione Nano formulated herbal bioactives in animal based functional foods: A nutritional approach to enhancing bioavailability and health benefits ScienceDirect