How it may work
A tricarboxylic-acid-cycle intermediate with signalling and substrate roles.
Guide-level evidence orientationEvidence level D
Level D describes sparse or indirect human evidence for this exact question; read the conclusion for direction and limits.
This guide-level grade is an orientation, not a direction-of-effect label, product grade, claim or personal recommendation.Why people are interested
A form of a molecule used in the cell's energy cycle. Longevity interest is high, but strong controlled human outcome data are still limited.
Library trackResearch Radar
Last reviewed20 Aug 2026
Guide scopeIngredient research only
What people have studied
Human longevity interest currently exceeds the quality of controlled clinical outcome evidence.
What to consider
Product-specific purity, calcium exposure and long-term use need evaluation.
Local pathway
Novel-food and source review likely required.
Sources + indexes
See where the explanation comes from.
Open the linked research and official records behind this guide. Early topics may begin with a research index while stronger sources are added.