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Home » Tucker Carlson Show: w/ Michael Nehls on Alzheimer’s, Depression, Anxiety (Transcript)

Tucker Carlson Show: w/ Michael Nehls on Alzheimer’s, Depression, Anxiety (Transcript)

The following is the full transcript of scientist and physician Michael Nehls’ interview on The Tucker Carlson Show, July 3, 2026.

Editor’s Note: In this compelling interview, Tucker Carlson sits down with physician and molecular geneticist Dr. Michael Nehls to explore unconventional perspectives on brain health and disease prevention. Dr. Nehls challenges mainstream medical narratives, discussing the potential of lifestyle interventions and specific minerals, such as lithium, to combat conditions like Alzheimer’s, depression, and anxiety. Throughout the conversation, the two delve into the influence of the pharmaceutical industry and the hidden factors they argue are impacting global mental health.

Dogs, Oxytocin, and the Brain

TUCKER CARLSON: Thank you for coming back. I’m really excited about this. So we’re going to talk about algae oil and lithium. I can’t believe I’m saying I love this, but we were just having a conversation off camera about dogs, and I was telling you my crackpot health theories, which are very sincere and firmly believed. But one of them is that sleeping next to your dog in bed and having dogs in your life, physically in your life, kissing dogs, is very important to your health. I feel that way strongly, but I never tell anybody because it’s too crazy. But you just affirmed my belief. You said there might be some science behind.

MICHAEL NEHLS: Yeah, there was a paper a few years ago in Science where they actually showed that dogs actually captured what we call the oxytocin system. Oxytocin is a hormone, produced by your hormones. Yeah, they are produced and they are for bonding. Actually, the main purpose of oxytocin is — it’s a Greek word — it’s for easy birth. It actually is activating the uterus and helps delivering the baby.

TUCKER CARLSON: Yeah, like the toxin that they give to—

MICHAEL NEHLS: Yeah, exactly, same stuff. And every time we look into the eyes of friends and be happy and have companionship, then oxytocin is produced in our body. And the oxytocin has one important function, and that is not only to give easy birth when you deliver a baby, but also a second function, which is actually important for the bonding between the mother and the child.

So the bonding between the mother and child is essential for the life of the child. If you can’t remember the child, if you can’t smell it, if you don’t have a connection to the child, the child is lost. So the mother love, in the love of the mother to the child, has to keep for the whole life. And this, of course, is a function of our autobiographical memory center, which we call the hippocampus, a seahorse-shaped structure here in the temporal lobe of our brain on both sides, big like a thumb.

This is the memory center. Actually, we will talk about this in depth, I guess, because this memory center is important if we are able to think peace, if we actually act like humans, reflect about things. And of course, if it doesn’t function, one disease which we all know about, which I call hippocampal dementia, is Alzheimer’s. Alzheimer’s starts from the hippocampus.

And the main reason — I published this in 2016, I called it Unified Theory of Alzheimer’s — is that this hippocampus has the ability to grow new nerve cells every day. These are required that we can accumulate a lifelong information, knowledge, experiences that are valuable for our children, but also for our grandchildren. The main reason we get that old as we get. So the hippocampus has to grow new cells. And one of the major fertilizers of this growth process is oxytocin.

So when a child is born, a lot of oxytocin is produced, the hippocampus grows, and the mother has a better memory than ever in her whole life when the child is born. The same actually does prolactin, which is important for giving milk to the baby. So giving milk to the baby, the birth of the baby produces hormones, and these hormones activate the growth of the hippocampus.

And the same goes for dogs. When a dog looks into your eyes, it was proven, the oxytocin level increases in your blood, but not only in your blood, also in the dog’s blood, by the way. So there is kind of a bonding between the two species based on the oxytocin system. And the paper in Science about 10, 15 years ago said that the oxytocin system was captured by the dogs so that they become our friendliest companions.

The Evolutionary Purpose of the Human-Dog Bond

TUCKER CARLSON: What could possibly — first of all, that’s beautiful and great to hear, but what could be the purpose of that?

MICHAEL NEHLS: Well, for the dogs, it means they get the food every day they need. It is a species which survived that way. And evolution works in a way that you have to survive and your children have to survive, and your kids have to survive. And that is more likely if the wolf becomes a dog.

TUCKER CARLSON: Yes, the dog is dependent on you.

MICHAEL NEHLS: It’s dependent on you. The dependence is guaranteed by the oxytocin system.

TUCKER CARLSON: But why? And I understand that, of course, but what would be the purpose for people?

MICHAEL NEHLS: For the people in the past, it was like they were companions in hunting. They protected your space. So they were for safety reasons. And meanwhile, I recommend them actually as a therapy against Alzheimer’s.

TUCKER CARLSON: Dogs?

MICHAEL NEHLS: Yeah, sure, because they grow the hippocampus. And the bigger the hippocampus, the less likely you get Alzheimer’s. Actually, the paper I published, Unified Theory of Alzheimer’s, goes back that the fundamental physiological or pathophysiological problem in Alzheimer’s is the non-production of new nerve cells in the hippocampus based on our lifestyle.

TUCKER CARLSON: Based on — okay, so the way we live affects the risk of getting Alzheimer’s.

Neuroinflammation, the Hippocampus, and the mRNA Connection

MICHAEL NEHLS: Exactly.