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April 12, 2025 90 mins

Summary: Dr. Michael Crawford began studying DHA in 1972 and has published extensively on the importance of omega-3 DHA in human brain development and recently published the book 'The Shrinking Brain'.  In this interview, Prof Crawford discusses how DHA conducts electricity in the body and explains why this electron flow is crucial for synaptic function and learning processes in the brain.

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Takeaways: 

  • DHA is essential for brain development and function.
  • The composition of the brain's fatty acids is conserved across species.
  • Marine mammals like dolphins have larger brains due to DHA availability.
  • The rise in brain disorders is linked to nutritional deficiencies.
  • Government recommendations often overlook the importance of DHA for brain health.
  • Iodine deficiency can lead to severe cognitive impairments.
  • Seafood is a rich source of DHA and essential trace elements.
  • DHA's role in signaling systems is crucial for visual acuity and cognitive function.
  • Technology may negatively impact DHA levels in the body.
  • DHA is vital for cognitive development in children.
  • Pregnant women should consume adequate fish for fetal brain health.
  • The brain has been shrinking, correlating with declining mental health.

 

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  • "We're going to become a race of morons."
  • "No government has made recommendations for brain health."
  • "DHA is at the center of all signaling systems."
  • "DHA is crucial for visual acuity and cognitive ability."
  • "Mercury is neurotoxic at very high levels."
  • "DHA is highly susceptible to peroxidation."
  • "The brain uses 20% of the total energy level."
  • "Oysters were once commonly eaten in London."
  • "The free-range thing is a bit questionable."
  • "Wild food powered our brain evolution."
  • "Brain is a source of DHA."
  • "Coastlines would have been rich in food."
  • "Walnuts are a good source of ALA."
  • "Fish farming can be done better."
  • "We could become self-sufficient in food."
  • "The brain has been shrinking over time."

Chapters

00:00 The Importance of DHA in Brain Development 07:30 The Role of Nutrition in Human Evolution 23:40 The DHA Crisis and Its Implications 28:30 Nutritional Elements for Optimal Brain Function 40:48 Iodine and Its Role in Cognitive Health 52:16 Exploring Free-Range Farming and Nutritional Quality 55:55 The Role of Animal Products in DHA Intake 01:00:03 Innovative Fish Farming Practices 01:01:04 Marine Ranching: A Sustainable Future 01:06:44 The Impact of Technology on DHA Levels 01:09:25 The Shrinking Brain: Evolution and Nutrition 01:24:19 The Importance of DHA in Pregnancy and Child Development

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