Expect gradual, progressive improvement rather than sudden transformation
Aging reduces NAD+ synthesis pathways while increasing consumption by enzymes like CD38 and PARPs, activated by inflammation and damage.[13][15] CD38, an immune-related enzyme, ramps up with age, breaking down NAD+ precursors
One of the most influential factors is a person's biology, including age, sex, and body weight
Mechanistically, a lot of evidence suggests yes: vitamin B12 is important for DNA synthesis, hemoglobin production, and methylation all of which play a role in healthy hair growth
Those with digestive issues, like Crohns disease or celiac disease, that impair nutrient absorption
If it feels like nothing works, its time for a change