Dr. Andreas Eenfeldt, MD

By – Updated September 15, 2026

Dr. Andreas Eenfeldt is a Swedish medical doctor specializing in family medicine and the founder of Diet Doctor. He led the company until the summer of 2026 but is no longer actively involved in its operations.

Dr. Eenfeldt has authored the biggest health blog in Sweden and a #1 best-selling book on nutrition that’s been translated into eight languages, including English. He may be partly responsible for a past butter shortage in his home country, and one of his presentations on low carb has been viewed over 4.5 million times on YouTube.

Dr. Eenfeldt graduated from medical school at Uppsala University in 2000. He spent twelve years working as a doctor, including eight years as a family physician, treating patients with low-carb, high-fat diets. During that time, he witnessed remarkable health improvements among people with obesity and type 2 diabetes. But helping one person at a time wasn’t enough to change the status quo. So, in 2015, he left his medical career to focus full-time on Diet Doctor.

Dr. Eenfeldt is also on the board of The Dietary Science Foundation, a non-profit organization dedicated to improving scientific knowledge and helping more people live healthier lives. This board position is unpaid.

Dr. Eenfeldt lives in Karlstad, Sweden, with his significant other and their two daughters. He is the author of many of the site’s core information pages.

Learn more about Diet Doctor

Medical license and certificates

Below, you’ll find certificates for Dr. Eenfeldt’s university medical degree, medical license, and specialist qualification in family medicine.

Dr. Eenfeldt's personal story, by Anne Mullens, Jan 2019

Quitting and starting a new life (member column, Jan 2019)

How to be less wrong, and building a team that questions everything (member column, Sep 2019)

Media

February 2020 — Everyday Health: Health makers: How the Diet Doctor puts lifestyle changes before prescriptions

Profiles in Swedish:

Video courses

MEMBERS ONLY

Diet & Diabetes – How to Normalize Your Blood Sugar

Presentations

MEMBERS ONLY
MEMBERS ONLY
A global food revolution
45:44
Around the world, a billion people with obesity, type 2 diabetes and insulin resistance could benefit from low carb. So how can we make low carb simple for a billion people?
Update from Sweden
44:39
People are revolutionizing their health with low-carb diets in Sweden.
MEMBERS ONLY
MEMBERS ONLY
A global food revolution
34:30
The mistakes behind the obesity epidemic and how we can fix them together, empowering people everywhere to revolutionize their health.
Weight control – calories or insulin
36:26
Is weight loss controlled by calories in and calories out? Or is our body weight carefully regulated by hormones?
A global food revolution
48:15
There’s a global food revolution going on. A paradigm shift in how we look at fat and sugar. Dr. Eenfeldt at the Low Carb USA 2016.

Conferences

Dr. Andreas Eenfeldt regularly presents at global low-carb conferences. Watch some of these presentations above. Below you’ll find a list of selected past conferences.

Full schedule of upcoming low-carb events

View selected past talks