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 50 full-time 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 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 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 50+ 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.

Medical license and certificates

Below you’ll find the certificates of Dr. Eenfeldt’s university medical degree, medical license, and his specialist certificate in family medicine.

University Medical Degree
Specialist certificate


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)


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

Profiles in Swedish:

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


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

Full schedule of upcoming low-carb events


Top guides

  • A ketogenic diet for beginners - CTA test Draft
  • A ketogenic diet for beginners
  • 14-day keto diet meal plan with recipes and shopping lists - Test page update

Latest posts

Why low carb works, and the imminent launch of Hava
The future of Diet Doctor and announcing Hava
Higher-satiety eating could become your new favorite lifestyle
"It’s a way of life for us now"
Dr. Ted Naiman to help hone higher protein options for better weight loss
Happy holidays from Diet Doctor!
Resolving technical issues as we improve the DD experience
We now have 80,000 members — and counting!
Ketones and low carb in the time of Covid-19: Helpful or harmful speculation?
Intermittent fasting in women over 60
Trustworthiness is a core value at Diet Doctor
Low-carb doctors: will you do remote consultations?
What's on your playlist?
How to make keto bagels
New low-carb vegan guide + meal plan
'Fat Chance' – can you ride a bike across Australia without carbs?
Are all calories the same?
A ketogenic diet with fewer vegetables
Metabolic flexibility, and what makes a diet work
Keto seed crackers
How much fat, protein, carbs to eat on a keto diet?
Changes to the Diet Doctor soy policy
This week's DD+ meal plan: Keto: Pescetarian
A low-carb diet for type 2 diabetes reversal
Can keto cause severe lasting weakness?
How Zein manages type 1 diabetes with low carb and exercise (plus insulin)
Free of IBS on a keto diet
New collaboration with recipe creator and food photographer Naomi Sherman
"I feel like I cracked the code!"
Video course: Eating keto with Kristie
How Gayle managed to change her life to the better at 66
'I've never felt or been better!'
How Cecily, MD, found a sustainable eating pattern that worked for her
Jil traded low-fat diets for a high-fat diet
From depression meds and diet pills to fasting and low-carb eating
How Virginia's life is different one year after going keto
Fasting protocol
Maureen ditched the carb-loaded food
How Marc reversed type 2 diabetes on a low-carb diet
How Barbara lost those stubborn postmenopausal pounds
Suggestions on how to achieve optimal ketosis?
How Artur turned his life around
How Alexandra won her battle with anorexia
This week's keto meal plan: Low carb: Summertime favorites
Peace, Love and Low Carb: New recipe collaboration with Kyndra Holley
What active Katy gained by going on the keto diet
"Try Diet Doctor and keto – the only thing to lose is fat"
How low carb is spreading throughout the world
Teicholz on the dietary guidelines: "At least do no harm"
"I'm doing things now that I never would have dreamed of doing before"
Part 7 of Dr. Jason Fung's diabetes course
How to make Indian butter chicken
How Anita transitioned to the keto diet and changed her life
Insulin toxicity — part 6 of Dr. Jason Fung's diabetes course
How April dramatically improved her active life with keto
PCOS and insulin resistance
Word is spreading about how low-carb eating can reverse type 2 diabetes
How to make crispy chicken skins
How Ashley got rid of all her stomach issues
"If you do it right, this will work"
Controlling hunger – part 1
How Dr. Huang adjusted keto to Chinese cuisine
How Deborah turned her hip surgery into a lifestyle change
Ketones – the metabolic advantage?
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
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
How Judy finally won over her migraines
How Richard conquered his type 2 diabetes
Can you follow a keto diet if you have high cholesterol?
How Sher got rid of her baby weight and joint pain
Can the keto diet help with migraines?
Pie-making champion goes low carb
Is Weight Watchers 'getting crushed by keto'?
How Leonie successfully manages type 1 diabetes
A low-carb story with Dr. Sanjeev Balakrishnan
Antonietta lost 150 pounds on the keto diet
How to make keto quesadillas
How to reverse type 2 diabetes and get fitter by the month
How the Miller family regained their health
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
Keto cheese chips cooking video
Meet Jason, seven months in on keto and IF
My success story with Katrin Crum
How Maria finally found her sustainable diet
How Ricardo lost 240 pounds
Isabella on keto: "I feel rejuvenated"
My success story with Mitzi Champion
How Michelle finally found a diet she could stick to
A family's keto journey
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
Can a keto diet help with severe gut issues?
How Debra handled her type 2 diabetes diagnosis
My success story with Chuck Hicks
How Emre found a sustainable diet
How Tammy and Steve regained their health
What happened when Dawn found keto
DD+ meal plan – adapted for 16:8 fasting
Regina did keto instead of bariatric surgery
Top five observational studies of 2018
Feeling like your early 30s in your late 40s
"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
How low carb are you?
How Candice got her life back
Sugar addiction meets keto
All day I dream about food – introducing Carolyn Ketchum
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
"Will I have weight loss if I'm over 20 g carbs per day?"
How Jonathan ended his junk-food habits
Is a low-protein, high-carb diet the key for a better aging brain? Maybe in mice
How James came off insulin, after 20+ years with type 2 diabetes
How Richard got a new life at 69
A low-carb story with Dr. Campbell Murdoch
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!"
How Bill reversed his type 2 diabetes and lost 94 lbs
My success story with Gillian Szollos
"Today, I was declared not currently diabetic!"
Elevated BMI tied to shorter life
Temptation — don't avoid it, remove it
My success story with Kenneth Russell
'Do I need to track my macros daily?'
The 2-week keto challenge: " I feel like the man I once was again"
How Steve won his life-long weight battle and reversed his type 2 diabetes
Can cheese and butter protect against type 2 diabetes?
How Daniel beat his type 2 diabetes and lost over 40 pounds
Prominent Harvard scientist discredited after fabricating data
UK tax on chocolate is on the way
Cooking keto with Dr. Sarah Hallberg
Introducing Sahil Makhija: Low-carb and keto recipes from India
New questionable health initiative from the candy industry
How Javier went from morbidly obese to having a new life
Jacquie after 6 months on keto
Melbourne Zoo stops feeding its animals fruit
Can 100% fruit juice labels claim "no added sugar"?
How Melanie got her energy back
Stop the blame game; with obesity, look to a metabolic root cause
Introducing Cristina Curp: Recipes inspired by Latin America and Spain
How Stephanie lost a whopping 150 pounds!
How to make a keto plate with Dr. Andreas Eenfeldt
Are low-calorie shakes the answer to the obesity epidemic?
How Sue stopped her lifelong battle with food
"Successful on LCHF without a gallbladder?"
Are there 'major doubts' about the safety of keto?
How Bethany reversed her PCOS
Cardiologist in Houston Chronicle: 'Want a healthier heart? Eat a steak'
Yogurt: A sugar trap!...or a healthy choice?
This week’s meal plan: fish, seafood and vegetarian dishes
What to do instead of counting calories?
How Cindy lost 70 pounds on keto, and helped transform the health of her family
Britain's NHS to fight diabetes with very low-calorie liquid diet
The keto diet: "My body moves and feels better than it did 20 years ago"
The keto diet: "This is a life changer for sure!"
The keto diet: "What I couldn’t believe was how easy it was!"
The very first episode of the Diet Doctor Podcast: Gary Taubes
Cooking keto: Jill's cheese-crusted omelet
Losing weight by delaying breakfast and having an early dinner
Could an all-meat diet cure some diseases?
The keto diet: I will never go back
"It has given me my health, happiness, love, and livelihood!"
Harvard professor: Coconut oil is "pure poison"
"Is it safe to stay in ketosis indefinitely?"
When you’re fueled by fat, traveling is a relative breeze
Could a keto diet increase the risk of diabetes (if you're a mouse)?
"I became free and beautiful"
Could a low-carb diet shorten your life?
This week's keto meal plan with few ingredient meals
Who is to blame for the obesity epidemic?
'The results from the two-week keto challenge were really impressive'
The ode to zucchini
Dr. Ted Naiman: Ketosis and a diet rich in protein
The keto diet: From pre-diabetes to feeling your best
Reflections on humans held captive in a carbohydrate culture
Mats lost 66 pounds: "Keto works"
Why more protein is better
The keto diet: "I started losing weight in such an easy manner"
The keto diet: "This way of life really seems to work!"
AGEs and how they relate to chronic pain
Danielle lost almost 20 pounds: "Once you go keto, you never go back"
Thank you so much for giving me my life back
The keto diet: "The results were nothing short of miraculous"
In praise of liver: falling in love with a widely reviled food
UK family doctors will be trained in low-carb diets

Medically reviewed evidence-based guides

How to treat insulin resistance

Boosting your immune system to fight the coronavirus: what you need to know

What you need to know about OMAD

The guide for doctors skeptical of low carb

How to treat insulin resistance

Ketogenic diet food list

Intermittent fasting for beginners

The Diet Doctor food policy


Potential conflicts of interest

Updated August 2022.

Dr. Eenfeldt is the founder, CEO and the largest shareholder of Diet Doctor.

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.

He also eats a low-carb diet.

No other potential conflicts of interest.


Team Diet Doctor