One of my favourite Zestology guests is back. Neurologist Dale Bredesen, M.D., author of the New York Times bestselling book The End of Alzheimer's, had the Number 1 book in the world for 2 days, (surpassing Hillary and Oprah).

Here are some of his big themes.

• Fasting: 14 to 16 hours? What's good? Do you allow coffee in that time?

• Saturated fats

• Good fats and histamine intolerance.

• Omega 3s.

• What supplements?

• Resveratrol. Is it really that good?

• Heart Rate Variability

• Oxygen saturation

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