Jakob Norgren

Jakob Norgren

Postdoctoral Researcher
Visiting address: Blickagången 16, 14152 Huddinge
Postal address: H1 Neurobiologi, vårdvetenskap och samhälle, H1 Klinisk geriatrik Eriksdotter, 171 77 Stockholm

About me

  • I completed my PhD in 2023 with Prof. Miia Kivipelto as my principal supervisor. The thesis is titled "The Impact of Macronutritional Composition and Ketosis on Cognitive Health: From Normal Aging to Alzheimer's Disease" and it can be downloaded here: http://hdl.handle.net/10616/48662

    Alongside my doctoral project, I had a leading role in the conceptualization and planning of a clinical trial that started 2023 at the Karolinska University Hospital: "COGNIFOOD—Investigating the therapeutic potential of changing the dietary carbohydrate/fat-ratio to prevent cognitive decline and Alzheimer pathology: A pilot study". The trial is founded by the af Jochnick foundation via FINGERS Brain Health Institute and data for analysis is expected in 2025–2026. More info: https://clinicaltrials.gov/study/NCT06105320


  • It's well established that lifestyle affects the risk for chronic disease, but more detailed knowledge is warranted to guide prevention strategies. In my doctoral project I investigated the impact of nutrition on cognitive health in normal aging and Alzheimer's disease. I'm especially interested in macronutritional composition and the impact of the metabolic state ketosis. My project included the planning and analysis of the clinical trial "Coffee &
  • Cream" where we investigated the ketogenic effect of medium-chain triglycerides (MCT) and coconut oil in combination with time-restricted carbohydrate intake. Some promising pilot trials on ketogenic diets for the promotion of brain health has led to an increased interest for this area of research. However, it's unclear how important ketosis is for mediating potential health effects of strict carbohydrate restriction. Results from my doctoral project suggest that even moderate changes in the carbohydrate/fat-ratio may impact cognitive function among older persons at risk for dementia. My current aim is to replicate those findings in data from other observational studies. The research question will also be addressed in an upcoming intervention study.

    I'm interested in gene-diet interactions and particularly the role of APOE, which is related to both dementia risk and the metabolism of macronutrients. Increased knowledge regarding such interactions may lead to more individualized diet recommendations in the future. Additionally, I'm interested in the development of improved methods for nutritional epidemiology, based on theories for compositional data analysis and causal inference.



  • Postdoctoral Researcher, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, 2024-2026

Degrees and Education

  • Degree Of Doctor Of Philosophy, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, 2023

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