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Naturally Nourished

Episode 450: Food Hardness and Mandible Activation

Naturally Nourished

Ali Miller RD

Health & Fitness, Nutrition, Health & Fitness:nutrition

4.8 • 655 Ratings

🗓️ 23 June 2025

⏱️ 45 minutes

🧾️ Download transcript

Summary

How much thought have you given to the importance of a good chew? While this may sound like a random topic, the simple act of chewing—and making sure the diet includes tough and crunchy foods—has a profound impact on our health. From digestion and metabolism to oral health, facial development, and even the way we breathe, chewing plays a foundational role. In this episode, we explore how modern diets of ultra-processed, soft foods have contributed to metabolic dysfunction, altered jaw structure, and impaired breathing patterns that can disrupt sleep and brain function. We also dive into the surprising neurological benefits of chewing, including its role in satiety, memory, and mental health. Chewing activates the vagus nerve and stimulates the release of cholecystokinin, a hormone that supports memory, learning, and appetite regulation. It also reduces stress responses, boosting activity in the hippocampus and prefrontal cortex. Research even suggests that soft diets can decrease synaptic density and hippocampal cell count—key factors in cognitive performance. This episode will have you reaching for raw carrots, slow-roasted stew meat, and other chewy, nutrient-dense foods while rethinking how each meal you serve your family can support both body and brain through the power of a good chew. Also in this episode:  Preorder Naturally Nourished Kids  Episode 370 Biological Dentistry with Dr. Joan Sefcik How the jaw works and how it has evolved The Jaw Epidemic: Recognition, Origins, Cures, and Prevention Cognitive development and jaw function Occlusion and brain function: mastication as a prevention of cognitive dysfunction  Foods to provide for kids  Nutrient absorption and chewing Jawline exercises and mewing The impact of chewing and hard foods on oral and dental health The Dental Diet | Dr Steven Lin Episode 239 Baby Led Weaning Speech and tongue function Why coconut oil pulling is a game-changer Remineralizing gum Larine   This episode is sponsored by:  This episode is sponsored by Carnivore Snax, a delicious snack combining just 2 ingredients: meat and Redmond Real Salt! These melt-in-your-mouth meat pastries are like no other dehydrated meat product or jerky on the market. We love that Carnivore Snax are a pro-America brand who sources from US farmers practicing regenerative agriculture and are verified by the Savory Institute confirming their carbon sequestering status. Check out the ribeye, pork loin, brisket and leg of lamb for just a few of our favorites! Use code NNPODCAST to save 15% off your order and get free shipping on $125 or more at carnivoresnax.com.

Transcript

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0:00.0

Welcome to the Naturally Nourished Podcast that delivers cutting-edge food is medicine solutions for optimal health.

0:12.8

Ali Miller is a nutrition expert sought up by the media in America's top medical institutes

0:18.3

for her revolutionary functional medicine interventions.

0:22.6

From disease treatment to prevention, every episode will empower you with ways to put yourself

0:28.3

back in control of your health. Please know, the topics discussed are for educational purposes

0:35.1

only. Now welcome, Integrative Dietitians, Allie Miller, and her co-host, Becky

0:41.1

You. Welcome to the Naturally Nourished Podcast. You are joining us for episode 450, the importance of a good

0:50.1

chew. This might sound totally random, but actually the act of chewing and ensuring that the

0:58.9

diet has tough foods and crunchy or harder foods actually plays a huge role in digestive,

1:07.2

metabolic, oral, and dental health, facial structure, even how we breathe, which can impact

1:15.1

our sleep quality and brain health. Yes, I'm actually really excited to talk about today's

1:21.0

topic and it kind of overlaps, of course, some of the principles of Dr. Westonay-Price.

1:26.3

When we talk about how our palate

1:28.5

has become more narrow with a more processed refined carbohydrate diet. And when we were putting

1:35.5

together naturally nourished kids, I wanted to include a part about not doing squeeze pouches.

1:41.4

You know, we've talked about how they can be prone towards, of course, food pathogen or bacterial overgrowth. They, of course, can create hyper palidability or desire

1:50.6

for more sweetened foods because many of them have, like, apple or more simple fructose molecules

1:55.6

in them, even if they have, you know, a vegetable with it, et cetera. But really, it's a principle that we've talked about on the

2:03.2

podcast with baby lead weaning the importance of initially starting kids palettes with activating

2:09.6

the mandible and when i was digging into some of the literature i was shocked to actually see influence

2:16.1

on how chewing can impact your

2:19.0

prefrontal cortex, can influence cognition, can have an impact on how we actually make decisions

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