EP 115. Ayuno, cetosis y metabolismo con el Dr. Juan Viña

EP 115. Fasting, ketosis and metabolism with Dr. Juan Viña

28min 11sec
Spotify Amazon Apple

In this episode, Dr. Isabel Viña talks with Dr. Juan Viña , a physician, Professor of Biochemistry and Molecular Biology at the University of Valencia, researcher, and her father.

They discuss the real science and biochemical explanation behind the ketogenic diet, fasting, and ketosis , to understand what actually happens in our bodies when we switch from using glucose (sugar) as an energy source to ketone bodies.

We discussed key topics such as:

  • What are ketone bodies and why does our body produce them ?
  • The difference between being in ketosis and following a strict keto diet .
  • The real benefits of ketosis , beyond weight loss, including its use in diseases such as epilepsy or cognitive impairment.
  • Which key metabolic pathways for longevity are activated during periods of fasting where ketone bodies rise?
  • In what cases can it be dangerous and which people should take precautions ?
  • And finally, the truth about exogenous ketone supplements : do they work or are they just marketing?


This episode will help you understand even better how your metabolism works , when it makes sense to enter ketosis, and what real risks or benefits lie behind the keto diet and intermittent fasting.

IG of Dr. Isabel Viña @isabelvina
TikTok Dr. Isabel Viña: @isabelvinabas
YouTube Channel Dr. Isabel Viña: YouTube Channel