Dr. Stephen Phinney – 'The Case For Nutritional Ketosis'

Dr. Phinney is a physician-scientist who has spent 35 years studying diet, exercise, fatty acids, and inflammation. He has published over 70 papers and several patents. He received his MD from Stanford University, his PhD in Nutritional Biochemistry from MIT, and post-doctoral training at the University of Vermont and Harvard.
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48 comments

  • The laughter when Inuit women are introduced as experts…

  • 3:18 So if you're in ketosis should you not fast in order to avoid "starvation ketosis"?

  • Lived among the Eskimos in northwest Alaska for over 20 years. Seal oil is served with every meal; people eat as much as they want (in other words, to satiety). I went for 3 months one spring on just caribou meat and fat/marrow, with homemade whole milk yogurt for dessert. Felt normal…just less stool. Used dried fish and whale blubber one summer while working on St. Lawrence Island. (Fresh whale blubber is the best…tastes a bit like coconut oil.)

  • Nice pic. Used to climb that in the summer with my brother and ski down. 2.2K nematodes gave this a thumbs up. I hope they take advantage of their extra 7 days.

  • No offense but Dr. Phinney seems to have some excess belly fat. Not the first person on keto to find the fat went to his/her belly. Hard to get rid of.

  • 10:57 The Ornish diet is even more sad then sad

  • Intermittent high fat:carnivore/good carbs and it works for me.

  • only thing i find strange is all the requirements for electrolyte supplementation. I've heard organ meats might help this, but if keto is adaptive, why would it require 21st century adjustments? How could his example of the two men eating meat for a year, not include some anecdotes about muscle cramps and other ailments?

  • What a good teacher this guy is!!!

  • Why did the calcification and lesions develop in Stephenson (sp)?

  • But the lean body mass loss was taken from water fasts with people not keto adapted, right?

    I think it's reasonable to assume an adapted metabolism would spare lean body mass to a greater extent during a water fast.

  • He talks with an easy confidence that comes with walking the walk and a deep understanding of his subject matter

  • Lchf, fasting and ketosis is by far the biggest factor that helped my brain fight IV meth addiction..

  • Will you address hormone changes in some women and how it can actually have some cons instead of pros ?

  • keto can be good as a stabilizer, but TEST SHOW long term lifestyle is NOT good. Need to cure body so that is can make its own proper keyto. so many people pushing keto diet miss this very important info.

  • I just want to say thank you sir!

  • Awww, I knew I liked you!! Givin' Shasta some <3! Thanks for the great information!!

  • Has anyone experience with using ketogenic diet for non-endurance sports? Kickboxing, weightlifting, wrestling… Where you need a lot of energy in a short amount of time? Because I found I can train for 2 hours on a keto diet but I couldnt make as many squads and pushups and kicks in a row as when I am eating lots of carbs…

  • Phenomenal Dr Phinney as always. I just came off of another 7 day water fast and am fully Ketogenic. I do both intermittent fasting and high fat.

  • What an amazing accomplishment, dear Dr. Phinney! I am soooooo glad we are contemporaries and as always: VIVA the Internet! (I know you wish the two Inuit Ladies had an iPhone or two).

  • Good presentation. Found it quite difficult to keep up with it in parts owing to the jargon.

  • The benefits of keto continually blow my mind, I understand your excitement talking about it because it happens when I talk about too 👏👏

  • VK

    Thank you Dr. Phinney for all your excellent work on this subject. So hard to change the anti- fat dogma that still persists in modern day culture. I am currently looking into the fascinating ways of the Inuit people and just to point out something that you may or may not know; a science researcher actually did discover that these cultures obtained high levels of vitamin C through consumption of whale skin and muktuk. A 100 g piece provided an impressive 36 mg that was easily conserved through freezing or eating it raw. Other sources came from caribou liver, seal brain and kelp. They weren't lacking anything! A very sophisticated group of people indeed.

  • Does someone have the PDF he is talking about at 6:00: the chapter of the book describing Cahill's experiment showing that after adaptation, people do fine when their glucose is driven down to negligible levels.

  • Yes a lot of work done by him and others on ketosis and diet and health… thanks to that…

  • He says that in starvation mode "most of the brain's energy comes from ketones but still a 'minor' component comes from glucose", from gluconeogenesis. Ok so far. But then he says that this equates to "4 ounces of lean body mass per day. Even in the most adapted human, starvation ketosis is robbing you of a quarter pounder every day."

    I'm curious how this works out: In other words, how many calories comes from the gluconeogenesis of 4 ounces of muscle, when we know that 4 ounces of protein contains about 566 calories. Clearly 566 calories of glucose is not a "minor component", so I must not understand correctly.

    Or, is Dr. Phinney's math wrong, or is he simply mistaken about this?

  • I'm currently at around 30 mg/dL blood sugar on the ketosis diet and I actually feel pretty great. I haven't eaten carbs in days, though. Mostly olive oil and protein in my diet.

  • This is another reason why I respect Dr Stephen Phinney. Yes, he obviously promotes low carb, BUT he wouldn't say we should ALL be on it. He even says in one other video that he'd dislike having a diet named after him..

    Therefore, to me at least, this dude doesn't have a hidden agenda, this isn't a business op for him. He comes across as very genuine and passionate in helping people get healthier.

    In a sea of quacks, it is great to come across this dude….Also, he has a soothing voice, very digestible. ;D

  • Please list any large scale research on the use of Ketogenic Diet using this diet for a long time (1, 2, 3, 4, 5 or more years). I'm disappointed to see a Medical Professional promoting an unproven method. Researchers on Ketogenic diet have been done for specific diseases and used for short period of time. a Doctor you shouldn't recommend anything that hasn't been scientifically tested..

  • Down 250 pounds on low-carb. In the process of switching to Keto.

  • as he says, Fung has different data on muscle loss, so why don't they compare them?

  • This guy is my hero and i thank him deeply for all that he's done. Nothing fancy about him, but he makes so much sense and he's so enjoyable to listen to. Thank you for uploading this! 🙂

  • Best expert and I had seen almost every keto channels who claim "experts" and doctors too

  • I'd love to know how to translate this for those wanting to build muscle mass (i.e. bodybuilding). Any videos from these guys covering this? I love this channel

  • Right … you and Dr. Noakes … finally understood how metabolism works and stores energy … and I thank you for that, as this should in time eliminate bad science that has influenced the last two generations. Big Fan, also Dr. Volek, Dr. Westman, Champ, D'Agostino, Lustig … et al.

    70 Going On 100 … the Centenarian Diet

  • I am excited by these findings. My daughter is type 1 and I will share this with her. I am trying to reduce my weight and am also on lithium and Seroquel for bipolar. I wonder if these meds will rob me of the opportunity to achieve ketosis? Thanks for your work.

  • He is wrong about starvation ketosis and that a.a. comes from muscles – IT DOES NOT! Lean body mass is preserved by growth hormone. Studies proved just THAT, not what he's talking about – read here: https://intensivedietarymanagement.com/fasting-and-muscle-mass-fasting-part-14/
    Do you really think that body is that stupid to break down muscle when it has that extra skin, extra collagen that supports fat tissue? Aminoacids can come from there!

    Fasting ketosis is totally safe, this statement of his, that you will break down muscle is just wrong, facts does not support his claim.

    Otherwise – great man, great talk.

  • Consuming blood was not limited to the Masai.  Blood pudding was commonly eaten in the UK until very, very recently.  Also blood sausage, etc.  Meats must be properly drained of blood to keep well, but our human ancestors around the world would likely not have wasted such a valuable source of nutrition.

  • I'd like to see the blood work on those following this diet. Loosing weight doesn't mean your healthy. I'm thinking this guy looks like he could stand to loose 25 lbs. Let's see the blood work and if you're preaching it why are you carrying around that weight?

  • Hey Dr Phinney,I am so relieved!  My worst critics were me, myself, and I.  "If I would just eat less and exercise more; why am I so lazy?" etc., my self talk WAS pretty destructive.  I had given up on any hope of loosing weight and getting into good physical shape Currently I have a waste measurement of 52 inches, at 284lbs and 5'2, I have been so discouraged until NOW!  I am on my first week of a low carb, protein in moderation, high fat Ketogenic lifestyle.  I have successfully fasted in the past, so doing intermittent fasting will not be a problem.   I have eliminated sugars both in processed and natural forms.  For now I am avoiding alcohol and no more then one cup of morning java.  This a major habit change and I realize that in three weeks a habit change will be ingrained.Here is my Question:  In your talk, you state that early onset of Diabetes II can be reversed with diet and fasting,  but will I always be "insulin resistant?"  Looking down the road say one year, and I have lost the weight, gained muscle by working out, and am feeling more energy. Will the insulin resistance only be controlled by diet, or will my body heal itself of insulin resistance?   Let us say I want to incorporate dates for energy bars, or have an occasional glass of wine (not every day, more like 2-3 times per week, one glass)  Will my insulin resistance come back with those slight changes?  Assuming I continue on Ketogenic lifestyle with intermittent fasting?

    Thanks for your input

    Carrie Kucherro
    Texas

  • First time for me … and I agree, as been on ketogenic for 2 months … weight down 10% … blood sugar normal … wating for HDL to come up ..
    70 Going On 100

  • With metabolic disorder I have lost quiet a bit of weight in the last few months without having to spend hours at the gym or jogging ten miles a day on the Ketogenic diet. I have also noticed that i can not take over the counter or doctor prescribed medicines because they are way to strong, however i can take herbal medicines and other natural remedies and they work very well for me.

  • 18:30 "anybody here ever slept in an igloo?" "YEAHH"

  • Um, if you are burning fatty acids and turning them into ketones, there is that glyceral backbone that gets converted to sugar in the liver. Why wouldn't the brain just use this sugar along with the ketones.. why would it tap into the muscle storage? I believe the glyceral backbone amounts for 10% of the calories of the triglyeride no?

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