Nutrition psychology. Obsessive-Compulsive Disorder (OCD) and Schizofrenia. The cases for Carnivore and Ketogenic diets

~2 months ago, I started to host a live show on TikTok (n~30; ~2 hours per session) where I invite people to ask me anything about psychology! As a psychological scientist/research psychologist, I focus on prospection, executive functions, and nutrition psychology. Most people ask about various conditions and disorders. I typically suggest My big five to support health: 1. 30 micronutrients, tryptophan, choline, DHA, and EPA fats, from the same plate, 2. eat together, 3. nature and sunshine, 4. elevate the corners of your mouth, and 5. dance. Here are two case-studies which show how Carnivore and Ketogenic diets can be used to put Obsessive-compulsive disorder (OCD) and Schizophrenia into remission.

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~2 months ago, I started to host a live show on TikTok (n~30; ~2 hours per session) where I invite people to ask me anything about psychology!

The backstory is that I'm psychological scientist/research psychologist. My expertise is prospective thinking and executive function. For many years, I also did performance and executive coaching. In 2018, I was recruited to be a research leader at the University of Helsingfors. During that stint, I added nutrition psychology to the 'plate'.

My main message is My big five's:

1. Make sure that your meals contain >30 micro-nutrients (Österberg, 2019, 2020 a b; 2022, 2023; 2024).
   
   
2. Cook and eat together with other people, preferably with people you disagree with (Dunbar, 2017; Lustig, 2017).
   
   
3. spend time in nature (a park is fine), (Hartig et al. 1991; Kaplan and Kaplan, 1989; Ohly et al. 2016), and get sunlight (Landvreugd et al. 2025; Wang and Chen, 2020).
   
   
4. elevate the corners of your mouth (Österberg, 2001).
   
   
5. Dance. Studies based on scientific methods demonstrate that this matrix will improve your cognitive function (Österberg Köping Olsson, 2018, 2021).

Most of the questions are about what I would term negative psychology, that is, diseases or disorders, e.g. ADHD (executive dysfunction), depression, obsessive-compulsive disorder (OCD), and Schizophrenia.

Whereas I believe ADHD is typically a psychological phenomena – executive dysfunction – I thought of obsessive-compulsive disorder (OCD), and Schizophrenia as neurological. Here are the definitions:

Link to source.

Link to source.

But, recent studies suggest that also OCD and Schizophrenia can be put into remission with diet.

Link to source

Link to source.

Conclusion. These studies gives more support to My big fives.

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More about my expertise:

Executive coaching for CEOs/managers and workshops to facilitate Organizational Performance, Learning, and Creativity for Problem Solving | Lectures: Nutrition for physical and mental health | Course/lecture: children's emotional and social adjustment and cognitive development | Language training - Swedish | Academy Competency | CV | Teaching skills and experience | Summary of research project | Instagram | Linkedin | YouTube-channel | TikTok | Twitter