What you will learn
AKG (alpha-ketoglutarate) is a metabolic intermediate, while NAD+ is a coenzyme involved in redox reactions and cellular energy. They are different substances and should not be presented as identical.
Key points
Healthy-aging evidence may come from cell, animal, or human studies. Each level answers different questions, and early research does not automatically prove a specific product benefit in people.
How to evaluate claims
Check the study population, sample size, formulation, dose, control group, duration, outcomes, and conflicts of interest.
Next step
Review product ingredients, directions, safety information, and evidence limits together before making a decision.