Nutritional neurologist David Perlmutter let Yahoo Health into his kitchen. Spoiler alert: He is not afraid of olive oil!

Filmmaker Max Lugavere is known for his popular vlogs on health science topics ranging from intermittent fasting to the microbiome. He’s currently filming Bread Head, a documentary about preventing dementia through diet and other lifestyle factors.

I’m a huge believer in the role of food and lifestyle in mediating our health. We need only look to the incredible insights science has provided in 2015 to see the magnitude our choices have on our wellness. And yet, while nutrition training in medical schools continues to be inadequate, more and more physicians are getting hip to the fact that true health care may, in fact, begin in the kitchen. One leader in the field of functional medicine — an approach that addresses underlying causes of illness (not just a set of symptoms) and puts emphasis on disease prevention through diet and lifestyle — is neurologist David Perlmutter, MD. He has spent his career taking an integrative approach to neurodegenerative disease and writes a lot about the power of food in modulating brain health. He’s the author of numerous New York Times bestsellers, including Grain Brain and last year’s Brain Maker, and is a fellow of the American College of Nutrition.

Related: ‘Wheat Belly’ Author on Why Going Grain-Free Is the Key to Weight Loss

I caught up with Perlmutter to find out what he eats for breakfast (video above) and lunch (video below) on an average day. You might be surprised.

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