Dr. Andreas Eenfeldt, MD

DD_AndreasDr. Andreas Eenfeldt is a Swedish medical doctor specialized in family medicine. He is the founder and CEO of Diet Doctor, part of our fast-growing team of more than 40 co-workers.

During the last ten years Dr. Eenfeldt has authored the biggest health blog in Sweden and a #1 best-selling book on nutrition that’s been translated to eight languages, including English. He may be partly responsible for a past butter shortage in his home country, and one of his conference presentations on low carb has been viewed over 600,000 times on YouTube.

Dr. Eenfeldt spent twelve years working as a doctor and eight of those years as a family physician, treating patients with low-carb, high-fat diets. During that time he witnessed amazing success for people with obesity and type 2 diabetes. But despite that, helping one person at a time couldn’t change the status quo. So in 2015 he quit.

Now he runs the fast-growing health company Diet Doctor together with 40+ co-workers. The Diet Doctor website is completely free from ads, product sales or industry sponsorship. It’s instead fully funded by the people, via an optional membership. Diet Doctor is by far the largest low-carb and keto website in the world, with over 350,000 daily visits.

Dr. Eenfeldt is also on the board of The Dietary Science Foundation, a non-profit 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 young daughters. He spends just about all his waking hours either with his family or working on DietDoctor.com. He’s the author of many of the core information pages on the site.

Learn more about Diet Doctor


If you want to contact Dr. Andreas Eenfeldt send an email to andreas@dietdoctor.com. Please note that he reads all emails but has limited time to answer – and he can’t give personal medical advice about diet or health via email.

Dr. Eenfeldt is on TwitterLinkedIn and Wikipedia.


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

Video courses

Keto course with Dr. Andreas Eenfeldt
How to eat LCHF
The 5 common mistakes on LCHF
Diet & Diabetes – How to Normalize Your Blood Sugar
The Top 5 Tips For Weight Loss


  • Weight loss and type 2 diabetes reversal on low carb – is it sustainable?
  • A global food revolution
  • A global food revolution
  • A global food revolution
  • Weight control – calories or insulin
  • Weight control, the calories vs. insulin theory
  • Update from Sweden
  • The food revolution
  • A global food revolution


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


Full schedule of upcoming low-carb events


Top guides

  • A ketogenic diet for beginners
  • 14-day keto diet plan and menu
  • Ketogenic diet foods – what to eat

Latest posts

How April dramatically improved her active life with keto
What membership feature do people want as a member of Diet Doctor?
PCOS and insulin resistance
More sustainable, ethical meat? How about trying a steak from older cows?
Normal blood sugar after decades of insulin resistance?
Word is spreading about how low-carb eating can reverse type 2 diabetes
Landmark diabetes report says low-carb is a top option
The keto challenge: "My cravings for sugar are gone!"
This week's meal plan: Low carb: Dairy free #1
How to make crispy chicken skins
How Ashley got rid of all her stomach issues
Why low-fat diets don't work — Dr. Jason Fung's diabetes course
"If you do it right, this will work"
Check out our low-carb and keto recipe collections!
Controlling hunger – part 1
How Dr. Huang adjusted keto to Chinese cuisine
The keto challenge: "You have made being healthy so easy"
Building healthy athletes: from beginner to winner
This week's meal plan: Low carb: Festive Easter week
Insulin resistance and sexual health — Dr. Priyanka Wali
Should you be afraid of cholesterol on a low-carb diet?
How Deborah turned her hip surgery into a lifestyle change
The keto challenge: "It gave me a new start"
Ketones – the metabolic advantage?
The carbohydrate-insulin model of obesity — Dr. David Ludwig
Leg cramps cramping your style? New guide aims to help
How a health educator became convinced of low-carb eating
A story about challenges, love and hope
The keto challenge: "It was much easier than we anticipated"
Is there a link between low carb and eating disorders?
This week's meal plan: Keto fast-food favorites
Fire destroys low-carb clinic in Tennessee
A low-carb diet for reversal of type 2 diabetes - Dr. Sarah Hallberg
How J got back to his active self
This week's meal plan: Frida Hofmann's hearty favorites
Weight loss and type 2 diabetes reversal on low carb – is it sustainable?
The keto challenge: "My cardiologist recommended this program"
Top videos about heart disease
How Judy finally won over her migraines
How to think about how to eat — Gary Taubes
Don't miss the Public Health Collaboration Conference 2019!
Managing type 1 diabetes with low carb with Dr. Katharine Morrison
What would you like to see more of on our site?
The keto challenge: "I am not stopping anytime soon."
How Richard conquered his type 2 diabetes
Book your tickets to Low Carb USA Seattle 2019
Can low carb and keto help with PMS?
This week's meal plan: Keto – cheese appreciation week
Can you follow a keto diet if you have high cholesterol?
Low-carb videos from Chile
All presentations from Low Carb Denver 2019 available for members!
How Sher got rid of her baby weight and joint pain
Do you need more carbs when breastfeeding?
Can the keto diet help with migraines?
Watch Low Carb Denver livestream at Diet Doctor
This week's meal plan: Kristin Parker's family favorites
The keto challenge: "This lifestyle was made for me"
Pie-making champion goes low carb
The world's first diabetes and low-carb event!
How do you maximize your health?
Is Weight Watchers 'getting crushed by keto'?
This week's meal plan: Keto #41 – family favorites
The keto challenge: "I lost 11 pounds and my high blood pressure!"
How Leonie successfully manages type 1 diabetes
A low-carb story with Dr. Sanjeev Balakrishnan
Antonietta lost 150 pounds on the keto diet
Top videos on dietary guidelines
The 2-week keto challenge: "First and foremost – it works!"
Can exercise be problematic for women?
This week's meal plan – taste of the Mediterranean
How to make keto quesadillas
Diet and exercise for a healthy heart
How did you find Diet Doctor?
How to reverse type 2 diabetes and get fitter by the month
How the Miller family regained their health
Women's questions – new video series
Tickets to Low Carb Denver 2019 are back on sale!
This week's meal plan: Fast-food favorites
The 2-week keto challenge: "It’s changed my life already"
How to commit to a lifestyle change — Dr. Jen Unwin
How Jade controls her epilepsy with keto
"Why am I not losing weight on the keto diet?"
Graham went low-carb after 10 years of type 2 diabetes
Dr. Bret Scher: Evaluating the evidence, challenging medical dogma
My success story with Carole Freeman
This week's meal plan: Rickard's vegetarian week
Keto cheese chips cooking video
The 2-week keto challenge: "Keto gives me so much energy"
Meet Jason, seven months in on keto and IF
LCHF Mega Summit attendance hits 2,000
My success story with Katrin Crum
Rachel 20 months after being diagnosed with type 2 diabetes
How Maria finally found her sustainable diet
Don't miss booking your tickets to KetoLadies 2019!
The 2-week keto challenge: "I feel inspired to continue on"
This week's meal plan: On a budget
A low-carb story with Dr. Peter Foley, part 2
How Ricardo lost 240 pounds
Top videos about meat
Isabella on keto: "I feel rejuvenated"
My success story with Mitzi Champion
This week's meal plan: eat like a boss
We’re hiring an experienced and driven editor/writer/journalist
The 2-week keto challenge: "I feel fantastic!! Fantastic!!!"
Mastering your food cravings – Stephanie Dodier
How to prevent chronic disease – Dr. Trudi Deakin
How Michelle finally found a diet she could stick to
A family's keto journey
This week’s meal plan – Dairy free #7
Losing weight when older with a slower metabolism
How keto works – part 2 of our video course is now available for free
Ketone strip shortages (in some areas) endanger patients with diabetes
Dr. Andreas Eenfeldt: Empowering people everywhere to revolutionize their health
A worldwide food revolution – Kim Gajraj
Can a keto diet help with severe gut issues?
Which diet are you planning to pursue in 2019?
How Debra handled her type 2 diabetes diagnosis
A low-carb story with Dr. Peter Foley, part 1
This week’s meal plan – Vegetarian #1
Our #4 most popular video of 2018: Living low carb with Caroline Smale
Get the full Diet Doctor experience!
Exciting times for Diet Doctor!
Our #5 most popular video of 2018: Tim Noakes on trial
My success story with Chuck Hicks
'Fat Chance' – can you ride a bike across Australia without carbs?
How Emre found a sustainable diet
How Tammy and Steve regained their health
Our #7 most popular video of 2018: Bodyweight training for beginners with Dr. Ted Naiman, MD
What happened when Dawn found keto
This week’s meal plan – adapted for 16:8 fasting
Top exercise videos
How Jill Rieder lost weight and found her way to health
Regina did keto instead of bariatric surgery
Top five observational studies of 2018
Top five press articles – 2018
Top five opinion editorials of 2018
Top five medical journal articles of 2018
Feeling like your early 30s in your late 40s
Top 5 low-carb studies of 2018
This week’s meal plan: Family favorites
Happy Holidays from us at Diet Doctor!
"Eating an LCHF diet has reversed my diabetes and changed my life"
"How many calories do keto-fasting people eat?"
How Melissa put her type 2 diabetes in remission
This week’s meal plan: tastes like Christmas!
The 2-week keto challenge: "I feel substantially better than two weeks ago"
How low carb are you?
How Candice got her life back
This week’s meal plan: winter warmth
#1 diet trend on Google 2018
The 2-week keto challenge: "lots of energy, no hunger"
Sugar addiction meets keto
Can you write a short review about Diet Doctor?
Struggling to afford insulin
This week’s meal plan: Dr. Andreas Eenfeldt's favorites
The 2-week keto challenge: "I feel fantastic and in total control"
Understanding and treating type 2 diabetes — Dr. Jason Fung
All day I dream about food – introducing Carolyn Ketchum
Fat is no longer at the top of the ingredients-to-avoid list
Keto Gatherings: Joy with the carbivores
How cholesterol really works – presentation with Dave Feldman
"Trying to heal my broken brain"
A ketogenic diet and brain cancer
The 2-week keto challenge: "I have energy!"
Treating patients with low carb – workshop for doctors
This week’s meal plan: on a budget
We're updating our 2-week keto challenge!
Diet Doctor's adventures in Santiago, Chile
Powerful beverage lobby is battling to keep juice in new Canadian food guide
Achieve ketosis through fasting — Ivor Cummins
Tim Noakes on trial – full documentary on YouTube
"Will I have weight loss if I'm over 20 g carbs per day?"
How Jonathan ended his junk-food habits
This week’s meal plan: new life to holiday leftovers
Is a low-protein, high-carb diet the key for a better aging brain? Maybe in mice
Cut avocados with care to avoid a trip to the ER
Keto news highlights: A major low-carb victory and a major butter theft
The 2-week keto challenge: "keto is a life changer"
How James came off insulin, after 20+ years with type 2 diabetes
Dr. Eenfeldt about the past and future of Diet Doctor, on the Keto Woman Podcast
How Richard got a new life at 69
This week’s meal plan: dinner in 30 minutes or less
A low-carb story with Dr. Campbell Murdoch
Is 2020 the year for real change in the dietary guidelines?
Reporting from the Low Carb Universe 2018 conference
The 2-week keto challenge: "This is awesome!"
"Lies my doctor told me" – Dr. Ken Berry
Bodyweight training for beginners with Dr. Ted Naiman, MD
Suzanne Ryan shares her dramatic keto weight-loss story on Dr. Oz
Steven got his self-esteem and confidence back!
The 2-week keto challenge: "My arthritis pain is GONE!"
Content, community and connection: The value of low-carb conferences
How Bill reversed his type 2 diabetes and lost 94 lbs
This week’s meal plan: hearty and homemade
"Could it be the sugar?"
Keto news highlights: $$$$$$$$, butter nonsense and NASCAR
Diet Doctor podcast #6 – Todd White
The economic burden of obesity and diabetes
My success story with Gillian Szollos
Big Food's hold over nutrition research

Latest pages

PCOS and insulin resistance
Explore Diet Doctor Plus - our membership
How to reverse type 2 diabetes video course – Dr. Jason Fung
Low Carb Denver 2019
"If you do it right, this will work" – Dr. Eric Westman
Building healthy athletes: from beginner to winner
The science of low carb and keto – the evidence
Should you be afraid of cholesterol on a low-carb diet?
How low carb is keto? The evidence
How low carb is low carb? – the evidence
How low carb is low carb?
Ketones – the metabolic advantage
Low-carb and keto controversies – the evidence
Low-carb foods – the evidence
Weight loss and type 2 diabetes reversal on low carb – is it sustainable?
The best way to test ketones in blood, breath or urine
Low Carb Denver 2019 livestream
Pie-making champion goes low carb
Intermittent fasting for beginners – the evidence
Low-carb fruits and berries – the evidence
The Diet Doctor food policy – the evidence
Low-carb vegetables – the evidence
14-day low-carb diet plan – the evidence
The complete guide to sugar
Type 1 diabetes – how to control your blood sugar with fewer carbs
Keto nuts – the evidence
Keto snacks – the evidence
Keto alcohol – the evidence
Keto fruits – the evidence
Does the brain need carbs? – the evidence
Explore Diet Doctor
List of evidence-based guides
Keto vegetables – the evidence
In Spanish
Quitting and starting a new life
Living low carb with Jill Rieder: finding her way to health
Get started keto challenge 2019
Vegetable oils – the evidence
Guide to observational vs. experimental studies
Understanding absolute and relative risk
Ketogenic diet foods – the evidence
14-day keto diet plan and menu – the evidence
Eating better: Six steps down the carb mountain
Understanding and treating type 2 diabetes – Dr. Jason Fung
A low-carb diet for beginners – the evidence
How cholesterol really works – Dave Feldman
Keto gift guide
Treating patients with low carb – workshop for doctors
Weight loss
A ketogenic diet for beginners – the evidence
The Diet Doctor policy for evidence-based guides
Six ways to stay environmentally friendly on a low-carb or keto diet
The Diet Doctor policy for grading scientific evidence
Psyllium husk guide
Tim Noakes on trial
How to commit to a lifestyle change
Low Carb Houston 2018 livestream
How to stay low carb on a budget – Dr. Eric Westman
Should you count calories on a low-carb or keto diet?
How IRONMAN athlete Chris Holley lost 200 lbs
Achieve ketosis through fasting
How to stay low-carb on a budget — Dr. Catherine Crofts
"Lies my doctor told me"
The best ketone meter
Helping patients adopt low carb
Favorites & watch later
Low-carb guides
Video topics
Keto for beginners: Health effects
My success story with Cindy Miller
Diabetes guides
Weight loss guides
Top intermittent fasting videos
Intermittent fasting guides
Carbohydrates on a keto or low-carb diet
How to handle difficult low-carb cases
Monitoring patients on low carb: Lab tests
Protein on a low-carb or keto diet
Launching the Diet Doctor podcast
The Diet Doctor Podcast
Lab tests
Exogenous ketones: Do they work?
Low carb for doctors - top videos
Keto guides
Keto Success Stories: Over 100 Pounds (45 kg) to Lose
Keto Success Stories: 50-100 pounds (23-45 kg) to Lose
Success stories: 20-50 pounds (9-23 kg) to lose
Success stories: Up to 20 pounds (9 kg) to lose
Over 100 pounds (45 kg) to lose
Success stories: 50-100 pounds (23-45 kg) to lose
Success stories: 20-50 pounds (9-23 kg) to lose
Success stories: Up to 20 pounds (9 kg) to lose
600+ weight loss success stories
How to use the nutrition facts label
Ingredients to avoid on a low-carb or keto diet
Keto diet foods — top three mistakes at the grocery store
Keto diet food list – what to buy
Healthy fats on a keto or low-carb diet
All diabetes success stories
All keto success stories
Epilepsy success stories
Acne success stories
Keto success stories: men 18-39
Keto success stories: men 40+
Keto success stories: women 40+
Keto success stories: women 18-39
Low-carb video success stories
Keto video success stories
PCOS success stories
Migraine success stories
Type 1 diabetes success stories
Intermittent fasting success stories, men 18-39
Men 40+
Intermittent fasting success stories: Women 40+
All intermittent fasting success stories
Women 18-39
Intermittent fasting success stories
250+ keto success stories
Recipes FAQ
Killing for profit – Dr. Aseem Malhotra
"I make a difference every day"
"My pain has gone way down, doctor"
This should be standard of care
Low carb for people with type 2 diabetes
Food policy
Is ketosis just another word for starving?
What are we wired to eat?
Top 11 fast-food options for keto or low carb
Why more protein is better
Too much protein is better than too little
Dietary fat and cardiovascular disease
We are not designed to be chronically ill - Tim Noakes
Appendix: The healthy vegetarian keto diet
What do we mean by natural?
How to follow a healthy vegetarian keto diet
Heart disease and salt
Food quality: Is low carb enough?
My success story with Nathan Wiens
Clinical use of therapeutic fasting
How to measure your insulin response
Using low carb in a clinic to treat obesity
Open mic
Find a low-carb doctor
My success story with Jim Caldwell
What makes people obese?
Improve chronic pain with a keto diet
Team fat vs. team carbs
Why high cholesterol is healthy
Low-carb and keto fish and seafood recipes
All things keto with Keto Connect
Cholesterol: A passenger, not a driver
Teaching low carb to patients in the Middle East
Cooking keto with Kristie, season 1
Treating type 1 diabetes: fact vs fiction
The latest science behind a keto diet
Guide for low-carb dietitians
What about red meat and health?
All men 0-39 low-carb & keto success stories
Solving health problems like an engineer
All men 40+ low-carb & keto success stories
All women 0-39 low-carb & keto success stories
All women 40+ low-carb & keto success stories
All 600+ low-carb & keto success stories
The sustainable low-carb diet
Keto diets for epilepsy
Metabolic flexibility and what makes a diet work
Low Carb Breckenridge 2018
Facing the global mental health crisis
A global food revolution
Isn't weight loss all about calories?
Visual keto guides
Why you shouldn't fear protein on keto
Treating type 1 diabetes with a keto diet
The unknown story of vegetable oils
"Humans are not broken by default"
Is fear of protein the new fear of fat?
"After a day or two the hunger goes away"
Get off the type 1 diabetes roller coaster
"I sort of wanted to change the world"
Why and how you should measure ketones
Customizing keto to help treat cancer
The highway to poor health
How to help patients reverse type 2 diabetes
Advanced low-carb topics
Low-carb basics
The three most common myths about low carb
Weight loss
Low-carb cooking videos
Get started
Living low carb with Chris Hannaway
Low-carb and keto experts
Mini documentaries
"A more pleasurable way to live"

Medically reviewed evidence-based guides

Intermittent fasting for beginners

The Diet Doctor food policy


Potential conflicts of interest

Updated December 2018.

Dr. Eenfeldt is the founder, CEO and the largest shareholder of Diet Doctor.1 He also eats a low-carb diet.

No other potential conflicts of interest.


Team Diet Doctor

  1. The Diet Doctor company focuses on empowering people everywhere, by making low carb simple.

    Since the start of the company in 2007 Dr. Eenfeldt has been paid less than a regular doctor’s salary for his work (including all salaries and dividends).

    All income from Dr. Eenfeldt’s book sales and lectures go straight to the company, to further our mission.