Uploaded March 2025 | Updated September 2026, 7 hours ago
This episode features Dr. J.P Errico, the author of “The Vagus Immune Connection: Harness Your Vagus Nerve to Manage Stress, Prevent Immune Dysregulation and Avoid Chronic Disease."
Errico is known for his innovative work in neuroimmunology, the study of how the nervous system and immune system interact, with a focus on transcutaneous vagus nerve stimulation.
Errico recently joined IHMC as a Senior Research Scientist.
An early breakthrough in his career came in work studying the link between vagus-nerve stimulation and asthma. He says that patients admitted to the hospital for asthma — which numbers in the hundreds of thousands annually — spend more time in the hospital than patients who undergo a full spinal fusion surgery.
Errico and his colleagues tried stimulating the vagus nerve during asthma attacks on patients who were not responding to other treatments.
“They’d be hunched over, struggling to breathe and all of the sudden, at one point, they would suddenly just sit back and be able to breathe normally. And they would look at you with wide eyes and say, ‘What did you do?!’
They stimulated the vagus nerve.
Errico is an accomplished scientist, executive, entrepreneur, and inventor. He is the founder of ElectroCore, a prominent company specializing in neuromodulation that has developed a pioneering noninvasive vagus nerve stimulator.
“I’ve come to realize that stimulating the nervous system the right way also activates multiple other systems in the body,” Errico says. “One is your immune system. The other is your cellular metabolism. It also has a pretty profound effect on your microbiome. When I think of the four most fundamental pillars on which all life functions, it’s your immune system, it’s your cellular metabolism it’s your microbiome and it’s your autonomic nervous system.”
He earned an undergraduate degree in aeronautical engineering from MIT and worked at the U.S. Air Force’s national laboratory, Lincoln Laboratories. He also holds graduate degrees in both law and mechanical/materials engineering from Duke University.
The conversation covers a lot of ground including:
-- The influence on his life and career of teachers in his high school life that encouraged this math whiz to squeeze in years of advanced level math instruction at a young age.
-- The inspiration he found in Robert Jastrow’s “Red Giants and White Dwarfs,” a book he has shared now with his own daughter, and “Black Holes, White Dwarfs, and Neutron Stars” by Saul Teukolsky and Stuart Shapiro.
-- How his uncle’s frustrating experience with the design of medical devices fueled his interest in that field.
-- What he views as the confluence of law, science, and math. “The law is supposed to be about the truth, but at the end of the day, there is only one truth and that truth is math. Science is a story that we tell to try and explain what we observe, and that story evolves over time. It’s always imperfect, but math is perfect. Math is the truth.”
-- How the search for maximizing the efficacy of non-invasive vagus nerve stimulation led to gammaCore and Truvaga, devices his company has designed.
-- The role that the vagus nerve plays in the treatment of pain, phantom pain, depression, ketone expression, improving learning.
-- Errico’s book, “The Vagus Immune Connection: Harness Your Vagus Nerve to Manage Stress, Prevent Immune Dysregulation and Avoid Chronic Disease,” and much, much more.
For full show notes, visit, ihmc.us/stemtalk/episode-179
This episode features Dr. J.P Errico, the author of “The Vagus Immune Connection: Harness Your Vagus Nerve to Manage Stress, Prevent Immune Dysregulation and Avoid Chronic Disease."
Errico is known for his innovative work in neuroimmunology, the study of how the nervous system and immune system interact, with a focus on transcutaneous vagus nerve stimulation.
Errico recently joined IHMC as a Senior Research Scientist.
An early breakthrough in his career came in work studying the link between vagus-nerve stimulation and asthma. He says that patients admitted to the hospital for asthma — which numbers in the hundreds of thousands annually — spend more time in the hospital than patients who undergo a full spinal fusion surgery.
Errico and his colleagues tried stimulating the vagus nerve during asthma attacks on patients who were not responding to other treatments.
“They’d be hunched over, struggling to breathe and all of the sudden, at one point, they would suddenly just sit back and be able to breathe normally. And they would look at you with wide eyes and say, ‘What did you do?!’
They stimulated the vagus nerve.
Errico is an accomplished scientist, executive, entrepreneur, and inventor. He is the founder of ElectroCore, a prominent company specializing in neuromodulation that has developed a pioneering noninvasive vagus nerve stimulator.
“I’ve come to realize that stimulating the nervous system the right way also activates multiple other systems in the body,” Errico says. “One is your immune system. The other is your cellular metabolism. It also has a pretty profound effect on your microbiome. When I think of the four most fundamental pillars on which all life functions, it’s your immune system, it’s your cellular metabolism it’s your microbiome and it’s your autonomic nervous system.”
He earned an undergraduate degree in aeronautical engineering from MIT and worked at the U.S. Air Force’s national laboratory, Lincoln Laboratories. He also holds graduate degrees in both law and mechanical/materials engineering from Duke University.
The conversation covers a lot of ground including:
-- The influence on his life and career of teachers in his high school life that encouraged this math whiz to squeeze in years of advanced level math instruction at a young age.
-- The inspiration he found in Robert Jastrow’s “Red Giants and White Dwarfs,” a book he has shared now with his own daughter, and “Black Holes, White Dwarfs, and Neutron Stars” by Saul Teukolsky and Stuart Shapiro.
-- How his uncle’s frustrating experience with the design of medical devices fueled his interest in that field.
-- What he views as the confluence of law, science, and math. “The law is supposed to be about the truth, but at the end of the day, there is only one truth and that truth is math. Science is a story that we tell to try and explain what we observe, and that story evolves over time. It’s always imperfect, but math is perfect. Math is the truth.”
-- How the search for maximizing the efficacy of non-invasive vagus nerve stimulation led to gammaCore and Truvaga, devices his company has designed.
-- The role that the vagus nerve plays in the treatment of pain, phantom pain, depression, ketone expression, improving learning.
-- Errico’s book, “The Vagus Immune Connection: Harness Your Vagus Nerve to Manage Stress, Prevent Immune Dysregulation and Avoid Chronic Disease,” and much, much more.
For full show notes, visit, ihmc.us/stemtalk/episode-179









![Episode 185: Andrew Koutnik discusses metabolic health, athletic performance and growing up with ...
Today we have our good friend and colleague Dr. Andrew Koutnik on the show. Andrew is a research scientist who studies the influence of nutrition and metabolism on health, disease and performance. He specializes in Type 1 diabetes and works with a wide range of people to improve their metabolic health and athletic performance.
Andrew is a visiting research scientist at IHMC and has worked with Harvard, Johns Hopkins, NASA, and the Department of Defense to develop evidence-based strategies for overcoming complex health challenges.
He is a graduate of Florida State University and earned his Ph.D. in medical sciences at the University of South Florida, where he worked with another good friend of ours, Dr. Dominic D’Agostino, who has been a previous STEM-Talk guest.
Show notes:
[00:02:50] Dawn welcomes Andrew to the show and asks him about his website, andrewkoutnik.com (http://andrewkoutnik.com) , the quote on the site’s homepage “Demystifying complex science to help you thrive in your health journey,” and the tagline “Challenging the status quo of metabolic health, human performance, and the management of type1 diabetes.”
[00:05:31] Ken asks Andrew how old he was when he first learned he had Type 1 diabetes.
[00:08:32] Dawn asks why Andrew believes his Type 1 diabetes is one of his life’s ultimate assets?
[00:12:51] Ken mentions that Andrew grew up in Tallahassee and that despite suffering from childhood obesity, he was relatively athletic as a child. Ken asks Andrew to talk about his childhood.
[00:14:20] Dawn asks Andrew to talk about the weight-loss journey he underwent as a teenager.
[00:17:25] Dawn shifts gears to ask Andrew about how he got into science, mentioning that when he was younger, he never saw himself becoming a scientist.
[00:20:19] Dawn asks if it is true that Andrew was the sort of kid who would constantly asked questions.
[00:22:11] Dawn asks Andrew if it is true that after enrolling at Tallahassee Community College, it took him a while to decide on his major.
[00:22:58] Ken asks Andrew to talk about the impact that his undergraduate anatomy and physiology class and professor had on his journey.
[00:24:44] Ken mentions that after graduating from FSU, Andrew went to the University of South Florida where he worked with Dominic D’Agostino, who is both a previous STEM-Talk guest (https://www.ihmc.us/stemtalk/episode-153/) and a current colleague of Andrew’s. Ken asks Andrew how he met Dom.
[00:27:46] Dawn asks Andrew how he came to work in Dom’s lab.
[00:29:00] Dawn asks Andrew if his wife is still in touch with her former roommate, who connected Andrew and Dom.
[00:29:21] Ken asks Andrew to touch on some of the research he did with Dom while he was pursuing his Ph.D.
[00:31:49] Dawn shifts gears to talk about Andrew’s work in metabolic health and Type 1 diabetes. Dawn explains that a study published by the University of North Carolina found only 12 percent of Americans were metabolically healthy. Additionally, researchers from the Friedman School of Nutrition Science and Policy at Tufts University found in 2022 that only 6.8 percent of Americans had good cardiometabolic health. Dawn asks Andrew how he works with people who want to improve their metabolic health.
[00:34:19] Ken asks Andrew for his thoughts on the sentiment that a ketogenic diet is hard to sustain.
[00:36:55] Ken mentions that Andrew was part of a review that looked at carbohydrate restriction for diabetes (https://www.jci.org/articles/view/142246) , which is a practice that had been in use since the 1700s. It fell out of favor once insulin was discovered in the 1920s. Ken goes on to explain that carbohydrate restrictive diets, like the ketogenic diet, have regained popularity for the treatment and management of diabetes, weight-loss and a range of other health issues such as migraines, cancer and depression. Ken asks Andrew to first explain the history of carb-restrictive diets as a treatment of diabetes.
[00:39:43] Ken asks Andrew to talk more about the aforementioned 2021 review and its argument in favor of a medical nutrition therapy for diabetes management.
[00:47:21] Dawn quotes a passage from the American Diabetes Association website that reads, “Before insulin was discovered in 1921, people with diabetes didn’t live for long. There wasn’t much doctors could do for them. The most effective treatment was to put patients with diabetes on very strict diets with minimal carbohydrate intake. This could buy patients a few extra years but couldn’t save them. Harsh diets, some prescribed as little as 450 calories a day, sometimes caused patients to die of starvation.” Dawn asks Andrew if he feels that this quote discourages the use of carb-restriction and medical nutrition therapy for diabetes management.
[00:49:22] Dawn asks Andrew how the treatment of diabetes went from the use of insulin being prescribed along with carbohydrate restriction, to purely pharm... Episode 185: Andrew Koutnik discusses metabolic health, athletic performance and growing up with ...](https://i.ytimg.com/vi/ZTVhJ8h1jmY/mqdefault.jpg)
