How Much Ketosis Do You Need to Lose Weight?


How much ketosis do you need to lose weight? Can protein shorten life? And does eating extra fat really make you fat?

Get the answers in this week’s Q&A with Dr. Andreas Eenfeldt:

Clarification concerning Dr. Fung’s article “Does Eating Extra Fat Make You Fat?”

If you review the responses to this article, there is total confusion. One even points out the article contradicts information previously provided on the site.

While it is reasonable to conclude that most people visiting the site would be overweight and perhaps obese, if Dr Fung is correct, it would seem there would be cautions provided throughout the site concerning eating too much fat. I’m confused so please clarify.

Thank you,

I think we do caution people not to eat too much fat. We say that for the best long-term weight loss effect, you should only eat more fat if you’re hungry.

If you’re not hungry and you have excess weight to lose, don’t eat.

Adding lots of extra fat to your meals – when you don’t need it to feel satiated – will indeed slow down weight loss. If you want more clarification – and some entertainment – check out the second tip in this short video:

The Top 5 Tips For Weight Loss
Andreas Eenfeldt

At what level of ketosis can I expect to lose weight?

How long will it take before the body hits ketosis? I am only registering on the second colour of the strip tests, can I expect to lose weight at that level?

Only been going just over a week, think I am fairly strict, maybe a bit of full cream milk in tea and coffee instead of cream all the time. Is it unrealistic to be in ketosis at this stage?



You can certainly lose weight on that level of ketosis. It’s possible to lose weight even without ketosis. Ketosis is simply a definite sign that you’re burning lots of fat and that the body’s fat-storing hormone insulin is low. It’s helpful for weight loss but not necessary.

Andreas Eenfeldt

What’s your view on low protein intake and longevity?

In Dr. Rosedale’s video, he proposes that we eat 0.6 g of protein per kg of body weight (or lean mass? I can’t remember). Either way, it’s quite low. For someone weighing 56 kg (123 lbs), I can only eat 33 g of protein a day. That amounts to 5 eggs. I eat more than double that amount of protein a day. What’s your view on the “optimal” protein intake?
Thank you,

Dr. Rosedale could be right, and there are many people that believe what he believes. But it’s not really proven. So it’s also possible that life on a low protein level will just feel very long. ;)

Personally, I feel better at a somewhat higher protein level – about double that or more…

Andreas Eenfeldt


Low Carb for Beginners

More Questions and Answers

Many more questions and answers:

Low-Carb Q&A

Read all earlier questions and answers – and ask your own! – here:

Ask Dr. Andreas Eenfeldt about LCHF, Diabetes and Weight Loss – for members (free trial available).

More About LCHF and weight loss

  • How to maximize fat burning
  • How to burn body fat efficiently
  • The 5 common mistakes on LCHF
  • How to think about how to eat — Gary Taubes


  1. Nat
    I have been eating keto style for approx 5 weeks and lost 2kg at the start but put 1 back on. Only want to lose 8-10kgs but it won't budge! What am I doing wrong. I'm fairly active.
    Reply: #2
  2. Steffan
    Hey Nat ?
    Still to many calories going in... do a fast now and then. The way I do it is by only eating at night and remember to still eat in moderation.
    Except from this 8-10kg is not that much and it will go slow... and slow is good to keep most musclemass possible. I had 30kgs of fat to lose... the first 25 just "fell" of me and the last 5 took some time ?
    Regarding exercise do this and be active on the side: Body by science (its a book... read it..!)
  3. Angie
    I started lchf a month ago and the past 10 days I've been fasting for 17-18 hrs zero food and liquid intake! I usually break my fast with 2 glasses of water with apples cider vinegar then 30 mins later i have a lchf dinner (usually some protein, low carb veggies in some cream sauce) around 7pm then by 10pm I take a bullet proof coffee adding a lil whip cream, heavy cream, vanilla extract, butter and coffee! By midnight or 1am I'm not really starving but I need to eat before I sleep so I don't starve I usually do 3 boiled eggs, with a spoon of store bought mayo, a lil mustard and 2 small cucmber pickles. Sometimes I also munch on a few pepperonis and beef salami slices while I prepare the eggs!
    My Keto test is usually on the darker purple side. I also drink a few glasses of water to catch up! Can someone please advice if I'm on the right track to loosing weight? I'm definitely under 25grams of carbs! Should I cut down on fats to lose more I haven't really lost any weight maybe a half inch on my waist!
    Reply: #8
  4. julie
    I am yet to start on lchf diet because I am a bit confused. I am on medication for high cholesterol, is it safe to still go on lchf diet please? I weigh about 96kg and I want to go down to 85kg.
    Reply: #7
  5. Ivy
    Hi Nat,
    I am glad I am not the only one with the same problem.
    I did 6 weeks on Atkins and lost no more than 2 kg. After finding this website I realised that I had been snacking too much in between the meals. I also used full fat cream in my coffee, simply because I liked the taste. Now I have switched to 3/4 small meals a day with nothing in between. After watching Andreas's video of gulping down the cream I have cut down on the amount I use (I don't like black coffee!). I have also bought an indoor exercise bike as doing moderate exercise has always helped me lose weight. I hope it's going to work this time!
  6. Alan Sleadd
    I am confused on the limiting protein since I am in the Keto WOL for 5 months now but need to maximize proteins for working out and having the ability to gain muscle mass. 1g of protein per lb of lean body mass (not kilograms) would put me at 140gm per day with 2800 calorie intake. If limiting protein was mandatory to be in ketosis then you would have NO keto bodybuilders or athletes on this diet? I have been told very forcefully by LONG TIME keto experts that the science on too much protein being converted to glucose is like many other myths, based on old and in this case shoddy research from the 30's and 40's??? Just so you know my macros from various keto athletic and WOL sites say I should have a 2800 calorie diet including 220g fat, 140g protein and 20g carbs.
  7. Peter Biörck Team Diet Doctor
    Hi Julie!

    Follow the link and read more about LCHF and Cholesterol, then you can make your mind up.

    I am yet to start on lchf diet because I am a bit confused. I am on medication for high cholesterol, is it safe to still go on lchf diet please? I weigh about 96kg and I want to go down to 85kg.

  8. Marta
    Totally interested in the answer.
  9. ben
    "Only eat fat when hungry"
    I feel hungry all the time ;)
    Whats the definition of hungry?
    Reply: #12
  10. Victoria Kidd
    I signed up for diet doctor I'm having a hard time getting started struggling with a start up.....need help
    Reply: #11
  11. Peter Biörck Team Diet Doctor
    Hi Victoria!

    Have you tried our two week challenge?

    Ater that you could use the meal plans on our member pages.

    Good luck!


    I signed up for diet doctor I'm having a hard time getting started struggling with a start up.....need help

  12. Peter Biörck Team Diet Doctor
    H i Ben!

    That's a problem feeling hungry all the time...;) Then something in the body is not working as it should. For some people a way of solving this is to eat really strict LCHF, like max 10 gram carbs a day, 50-100 gram protein, the rest should then be fat. You usually don't overeat on such a diet.

    "Only eat fat when hungry"
    I feel hungry all the time ;)
    Whats the definition of hungry?

  13. Wendy
    Can a person reach ketosis fat-burning level when you a Type-2 diabetic now on Insulin??
  14. 1 comment removed
  15. Ryan
    Just seeing in this thread, a lot of these questions can be answered easily if you type the question into google. Many of these things can be remedied with basic strategies if keto diet protocols.

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