What Actually Helps Depression, According to a Family Physician?
Ken D. Berry, MD, family physician
Published 11/13/26
In my view a Proper Human Diet can do far more for depression and other mental health problems than I expected when I started recommending keto and carnivore for weight loss. Over 22 years as a family physician I have watched people who had lost all hope improve, and in many cases put severe mental health disorders into complete remission, by changing how they eat.
Does nutrition affect mental health?
When I first came to keto and carnivore around 2017 and 2018, I recommended it mainly for weight loss. I had no idea how powerful a Proper Human Diet could be. Patient and follower feedback taught me this is more than a weight loss diet. In my opinion it can heal you down to the mitochondrial level, and that matters for mental health as well as physical health.
What have you seen in people with severe depression?
I have seen people on a handful of medications, with long side effect lists, who had lost sexual desire and any desire to be part of a family or community. They were basically waiting for the next dose. When I see a twinkle of hope come back in that situation, I know it is a big deal. Offering real hope to someone who has lost it is, in my view, what being a doctor is about.
I am not selling pharmaceuticals, supplements or even meat. I am telling people to eat the meat. Knowing that mental health can improve significantly on this way of eating, and that severe disorders can go into remission, is what makes the work feel worthwhile.
Can diet put mental illness into remission?
In many cases I have seen severe mental health disorders put into complete remission by eating this way. Stories from people around the carnivore and low-carb world match that. One person's sister who had been carnivore for six months said that for the first time in her life she was not scared anymore. Someone with clinical depression for decades reported it gone in about three weeks. Chris Palmer has told the story of a person with schizophrenia who had been institutionalized for decades and, within a month or two, was discharged home and looking for part-time work.
Those are individual stories. In my opinion they still show what is possible.
What about people who never go to the doctor?
Plenty of people with clinical anxiety or depression never get diagnosed. They suck it up, keep going, and treat the fog and fatigue as normal because everyone around them feels the same way. Many put off appointments because they do not want to face a diagnosis, or because they do not have time or money.
To know there is a dietary change they can try at home, without first making a doctor appointment, is powerful. Anxiety and brain fog become the new normal for millions of people who are not labeled with a mental health condition but are still stuck: tired, foggy, sitting on the couch just getting by. In my view a lot of that is still a mental health problem, and food is part of the answer.
Why does the Healing Humanity documentary matter?
I watched Healing Humanity and came away speechless. Millions of people have given up even using the word hope. Sharing a film that puts real stories of recovery in front of them can be the beginning of hope they thought was gone. I love that documentary and I intend to share it widely.
This is not medical advice. Mental health conditions are serious. Work with your own doctor or mental health clinician before changing medications or treatment.
Frequently asked questions
Can a meat-based diet help depression?
In my experience, yes. I have seen significant improvement and, in many cases, complete remission of severe mental health disorders on a Proper Human Diet.
Did you start recommending carnivore for mental health?
No. I started recommending keto and carnivore for weight loss. Mental health results showed up in patient and follower feedback over time.
Do people have to see a doctor first to try this?
Many people who are suffering never make that appointment. A dietary change can be started at home.
Is brain fog a mental health issue?
In my view the mild daily fog a lot of people live with, like a constant slight buzz that makes them sit on the couch and just get by, is still a mental health problem even when it is never diagnosed.
Are the recovery stories proof for everyone?
No. They are individual stories. In my opinion they still show what is possible.
This information is not medical advice. Work with your own doctor on your health and medications.
About Dr. Berry
Dr. Ken Berry is a board-certified family physician who has cared for over 25,000 patients in more than two decades of practice in rural Tennessee. He grew up in Hohenwald, Tennessee, and earned his MD at the University of Tennessee Health Science Center.
He is the author of the #1 bestselling Lies My Doctor Told Me and the creator of the Proper Human Diet.
He lives on a farm in Holladay, Tennessee, with his wife Neisha and their two children.
