Alpha-ketoglutarate is produced in the body and is not found in food. However, as studies show, fasting and exercise can increase alpha-ketoglutarate levels in the blood. Another way to absorb alpha-ketoglutarate is through dietary supplements.

Careful with supplements though. A lot of the time, your replacing something that the body makes naturally makes the body make less of it naturally and can form a dependency where you become deficient if you stop taking the supplement.