Exogenous Ketones Explained (What They Really Do)

Exogenous Ketones Explained (What They Really Do)

From Metabolic Mind by Bret Scher

April 27, 2026 · 46 min

About this episode

Dr. Bret Scher interviews Dr. Dominic D'Agostino to explore the science behind exogenous ketones and their role in health.

Exogenous ketones have exploded in popularity, with claims ranging from better brain function to improved performance and weight loss. But what does the science actually say? In this in-depth conversation, Dr. Bret Scher sits down with leading ketone researcher Dr. Dominic D'Agostino to break down the reality behind exogenous ketones—what they are, how they work, and where they may (or may not) fit into your health strategy. They explore the key differences between: Endogenous ketones (produced by your body through diet or fasting) Exogenous ketones (supplements you consume) And why that distinction matters for both metabolic and brain health. This conversation covers: The different types of exogenous ketones (salts, esters, those derived from MCTs) Potential benefits for brain energy, seizures, and metabolic health Safety considerations and why formulation matters Why exogenous ketones are best viewed as a tool, not a replacement for a ketogenic diet The concept of a “sweet spot” for ketone levels in different conditions One of the biggest takeaways: context is everything. Exogenous ketones may offer the most benefit when used to support a well-formulated metabolic approach…

People in this episode

Host: Dr. Bret Scher

Guest: Dr. Dominic D'Agostino

Topics covered

  • exogenous ketones
  • brain health
  • metabolic health
  • ketogenic diet
  • nutritional supplements

Keywords

  • exogenous ketones
  • brain function
  • weight loss
  • metabolic health
  • ketogenic diet

Mentioned in this episode

Organizations: Department of Defense

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