Eira Cerda Reyes is a speaker for Gilead, Abbvie, Medix, Bayer, MSD, and Sanfer
For a deeper dive into why collagen matters, read What is the Benefit of Collagen to the Body
The VITAstir B12 being methylated (the active form) is the type my body needs due to an MTHFR gene
Additionally, because low NAD+ is linked to aging, its decline could contribute to the development of various age-related health concerns, including cardiovascular disease, metabolic disorders, the development of neurodegenerative diseases such as Alzheimers and Parkinsons, and cancer
Tanaka Y, Yagi M
In fish, amphibians, reptiles, and bird species belonging to older taxonomic orders the enzymes involved in vitamin C biosynthesis are located mainly in the kidneys, while in mammals and bird species from more recent orders these enzymes are found mainly in the liver (Grollman and Lehninger, 1991