Are Low Carb Diets Really Dangerous for the Heart? Breaking Down the Evidence

Are Low Carb Diets Really Dangerous for the Heart? Breaking Down the Evidence - with Dr. Bret Scher

Рет қаралды 10,401

Күн бұрын

In this video, cardiologist Dr. Bret Scher dives into a recent study that suggests an increased risk of heart attacks from a low-carb diet. A Twitter profile even declared, "Finally, good science!" But does this study really provide conclusive evidence that ketogenic diets cause heart attacks? Spoiler alert: No! Join Dr. Scher as he dissects the flaws and limitations of this study and discusses why it doesn't contribute meaningfully to our understanding of low-carb diets and heart health.
Most notably, to fully benefit from a ketogenic diet, it's essential to restrict carbs enough to transition to a fat-based metabolism. Diets that are low-carb compared to the Standard American Diet (SAD) but not low enough to induce ketosis won't provide the unique benefits of a ketogenic diet, making the health outcomes incomparable.
Key Points:
- The study in question used an observational nutrition epidemiology approach, often considered to provide low-quality evidence.
- Low-carb was defined as less than 100 grams of carbs per day, which is not truly low-carb and definitely not ketogenic.
- The majority of participants provided only one 24-hour food diary over a decade, a poor representation of long-term eating habits.
- The study participants who ate low-carb were generally less healthy to begin with, skewing results due to the healthy user bias.
- There was no clinically significant increase in LDL cholesterol between the groups.
- The hazard ratio for cardiac events was 1.3, which is marginal compared to stronger associations like smoking and cancer.
Studies Discussed:
Association of a Low-Carbohydrate High-Fat Diet With Plasma Lipid Levels and Cardiovascular Risk
www.jacc.org/doi/10.1016/j.ja...
Lower carbohydrate diets and all-cause and cause-specific mortality: a population-based cohort study and pooling of prospective studies
pubmed.ncbi.nlm.nih.gov/31004...
Dietary carbohydrate intake and mortality: a prospective cohort study and meta-analysis
pubmed.ncbi.nlm.nih.gov/30122...
Related videos:
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Low Carb is Not The Same As Keto!
• Low Carb is Not The Sa...
Does Keto Cause Atrial Fibrillation (AFib)?
• Does Keto Cause Atrial...
New Study Questions LDL Risk - An interview with Dave Feldman
• New Study Questions LD...
Follow our channel for more information and education from Bret Scher, MD, FACC, including interviews with leading experts in Metabolic Psychiatry.
Learn more about metabolic psychiatry and find helpful resources at metabolicmind.org/
About us:
Metabolic Mind is a non-profit initiative of Baszucki Group working to transform the study and treatment of mental disorders by exploring the connection between metabolism and brain health. We leverage the science of metabolic psychiatry and personal stories to offer education, community, and hope to people struggling with mental health challenges and those who care for them.
Our channel is for informational purposes only. We are not providing individual or group medical or healthcare advice nor establishing a provider-patient relationship. Many of the interventions we discuss can have dramatic or potentially dangerous effects if done without proper supervision. Consult your healthcare provider before changing your lifestyle or medications.
Timestamps
0:00 Introduction
1:09 Study background
2:04 Problem #1: How the study defines low-carb
3:25 Problem #2: Missing details on the types of carbs people ate
3:57 Problem #3: The data collection
4:39 Problem #4: The (un)healthy user bias
5:15 Problem #5: Clinical significance
5:53 Problem #6: The magnitude of the results
6:16 How to use this study as a physician
7:11 The importance of quality data
8:16 Conclusion
#MetabolicMind
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#KetogenicMetabolicTherapy
#NutritionalKetosis
#MentalIllness
#AlternativeTreatment
#MedicalKeto
#KetogenicTherapy
#KetoDiet
#KetoHeartHealth

Пікірлер: 87

@Interpid_Citizen Ай бұрын

These are studies conducted with the outcome decided prior to commencement.

@jimrutherford2773 Ай бұрын

I totally agree. The old adage applies here. Garage in, garbage out.

@mcdade7489 Ай бұрын

This is absolutely correct.

@Nope145 Ай бұрын

Yep. They had to conclusion, they just needed to make the evidence fit

@btudrus Ай бұрын

@@jimrutherford2773 " Garage in" Nice typo. (I aggree with "garbage in, garbage out")

@SHalto142 Ай бұрын

This type of analysis is one of the reasons I tune in to your channel😄

@jovoorheescollinsmphbsnbch6245 Ай бұрын

Thank you Doctor 🙏💯 I'm not a physician but I'm a diabetes management strategist. I have had lots of folks bring up this research to bash keto. I've tried to explain to them that we cannot rely on these studies because they are poorly done. Thank you for putting this in a concise, easy to understand manner. I will be sharing with my support group of 11K patients in the US 👌💯🙏

@myoung48281 Ай бұрын

As a doctor you know that long term RCTs are not possible and these kinds of epidemiological studies have some value. So how about presenting some long term studies that low fat diets are beneficial for mortality and heart health?

@NakaraEstora-wi8cz Ай бұрын

It's true in some cases, like mine, I have this autoimmune D due to stress. But I'm pretty sure there's some type of hereditary disease involve

@btudrus Ай бұрын

@@myoung48281 "these kinds of epidemiological studies have some value." No, garbage has no value. "So how about presenting some long term studies that low fat diets are beneficial for mortality and heart health?" Garbage. There is a good evidence that low -fat/high-carb diets make you sick...

@snicksic1 Ай бұрын

L@@myoung48281

@bodybuddha-t1d Ай бұрын

@@myoung48281 @myoung48281 Epidemiological studies often start with good intentions but can become less reliable over time, as they are frequently conducted by students aiming to contribute to their PhD thesis. These studies often lack the rigorous evidence needed for peer review and are pursued for academic tenure. Notably, low-fat diets have not proven beneficial for heart health or decreasing mortality rates. Ancel Keys, a primary advocate of low-fat diets, has had his theories debunked multiple times. For further reading, consider exploring multiple sources on the subject. This ensures a well-rounded understanding of the complexities and controversies in dietary science: Harvard T.H. Chan School of Public Health: Provides insights into the limitations of epidemiological studies in nutrition. Journal of the American College of Cardiology: Discusses the efficacy and shortcomings of low-fat diets. National Institutes of Health (NIH): Offers peer-reviewed articles on the impact of various diets on health. The Lancet: Features studies debunking previous dietary recommendations. These resources can offer a more comprehensive view of the issues surrounding epidemiological studies and dietary guidelines.

@wocket42 Ай бұрын

LDL increased? Yeah, but HDL too and TGs went down. They'll be fine.

@generalbystander1631 Ай бұрын

One new area for investigation; how could a prominent journal publish a study with such obvious methodological flaws? Can they be relied upon for anything?

@PeCo333 Ай бұрын

No 😅

@nataliajimenez1870 Ай бұрын

Showing that Metabolic Mind made a great choice in hiring a knowledgeable cardiologist like Dr Scher as its spokesman. The big critique of ketogenic diets is that it increases the LDL in a portion of the patients that try it (particularly lean people), so having a cardiologist that has a deep understanding of CVD and the current literature is extremely important. And thank you to Dr Scher for dedicating so many years to curing disease through very low carb diets. He could have been making a lot of money working as a cardiologist but he chose this road

@Hertz2laugh Ай бұрын

These are invaluable. More, please. Thanks.

@krisjustin3884 Ай бұрын

So much is being thrown at attempts to discredit low carb diets. Too much money at stake! So pitiful to see professional scientists and journalists compromising their standards for job security or more money!

@gmrbowden2133 Ай бұрын

A better question would be why is the medical industry going so far out of its way to keep people insulin resistant?...... 🤔

@mattm1686 Ай бұрын

Money Money!!!!

@biodivers5294 Ай бұрын

You’re explaining carefully, they are concluding carefree..

@Ridicvideo Ай бұрын

If garbage 🚮 is fed in and analysis is done, then...the result will be GARBAGE 🗑 #removingbarrierstohealing

@Hertz2laugh Ай бұрын

In other words, "Garbage in; garbage out".

@DebPatraker Ай бұрын

Thank you so much. I am trying slowly but surely to really and truly understand all about keto/ketosis/ketogenic/medical keto.

@bodybuddha-t1d Ай бұрын

I hold a Ph.D. in human biology and chemistry. Through its various hormones, particularly glucagon and insulin, the pancreas maintains blood glucose levels within a very narrow range of 4-6 mM. This preservation is accomplished by the opposing and balanced actions of glucagon and insulin, referred to as glucose homeostasis. This highlights how important and potentially deadly carbohydrates, sugar, and excess glucose can be. Excess uncontrolled ingestion of carbohydrates (i.e., glucose) is one of the most catastrophic injuries one can inflict on blood vessels, circulation, and internal organs. Simply put, human beings have a highly adapted system to process protein and fat but an inherently flawed system to cope with continued excess glucose (carbohydrate) ingestion. For those interested in diving deeper into the effects of carbohydrate overconsumption and the benefits of managing blood glucose levels, I recommend exploring research from reputable sources such as PubMed and studies on metabolic health and dietetics.

@md82892 Ай бұрын

But how do these studies even pass peer review process? What type of reviewers are these people missing obvious flaws in a study like this?

@CatholicNonno Ай бұрын

I'd love to see who funded this 'study'.

@AnneMB955 Ай бұрын

Well explained. I’m glad you and others are here to look at the flaws in these studies. There seem to be many nowadays. 👏🇦🇺

@Kjuken69 Ай бұрын

And there have never been flaws in the studies before? Follow the money and use you own brain! This idiotic youtube content, one day it is this the other day the oposite(this shit is BIG business as well) . And the most importent thing, do you think the foodindustri and the big pharmaceutical companies care about you and your well being? I hope you don't think that! Money and control over the big and mostly stupid masses of people, that's their agenda! And it's and easy one sorry to say.

@hanko5750 Ай бұрын

Those studies have one goal .. sell more processed crap and nasty seed oils IMHO

@stevelanghorn1407 Ай бұрын

I agree with you, but also hope that, had the same UK study suggested a benefit among their same study group, that you would still be questioning it, based on their methods…just as you are doing here.

@btudrus Ай бұрын

LDL nor ApoB causes atherosclerosis. Chronically high insulin and endothelian injury (e.g. by eating sugar) does.

@prozac5314 Ай бұрын

well said. Some people dont even question why cholesterol would "Clog" the most turbulent part of the vascular system 🤣🤣🤣🤣🤣🤣Its like saying trash would block a highly turbulent water dam before a slowly flowing narrow river

@GalvestonCountyMike Ай бұрын

Thank you

@bgrl6422 Ай бұрын

Keep stacking brother

@prozac5314 Ай бұрын

Yes humans always had high carb grainproducts, GMO fruits and refined sugar for millions of years!

@Malcolm-Achtman Ай бұрын

You can't believe what you read in the tabloids (AKA medical journals).

@contagiousintelligence5007 Ай бұрын

It’s interesting that most long living populations are mostly vegetarians. I think the jury is still out on this

@UnknownUser-sc6jx Ай бұрын

The LMHR study has already shown keto diet doesn't affect heart disease risk and shows that LDL cholesterol doesn't increase risk of atherosclerosis.

@laserhobbyist9751 Ай бұрын

In short, NO

@orion9k Ай бұрын

I have been losing muscle mass, strength and libido on a low carbs diet, even when pulling off daily 2-3 grams proteins per kilo body weight. Not sure if I should continue low carbs, or maybe go high fat soon, but my body composition looks really good. Not sure if my diet is 100% low carbs, I get berries, a carrot and lots of olive oil and nuts on a daily basis, so probably overall 100-120 grams of carbs per day.

@Alec_Collins78 Ай бұрын

But do I care what keto does for someone in good health?

@happyapple4269 Ай бұрын

if that was the case we wouldnt have survived as a species.

@Cyberrjey001 Ай бұрын

Hahah, this video could have ended in the first minute. Very "strong" study, though...

@KenJackson_US Ай бұрын

It seems lately there have been a number of "keto" studies that were not based on the keto diet and used low quality questionnaire data. Is it directed propaganda?

@mrhyperbolic7455 24 күн бұрын

I cannot do keto. Even with lots more water and electrolytes I get heart dysrhythmias. Cardiologist who is into low carb told me to stop. Now, I just eat reduced carb but not enough to go into ketosis. Best I can do and I get good results but obviously not what I was looking for.

@MoinKhan-rl3rx Күн бұрын

Why doctor stop your keto diet

@mrhyperbolic7455 Күн бұрын

@@MoinKhan-rl3rx He asked that I stop because of the irregular heart rhythm/beats I was experiencing. I hope that is clear now.

@MoinKhan-rl3rx Күн бұрын

@@mrhyperbolic7455 my father have 2 stunt can he do keto ?

@mrhyperbolic7455 Күн бұрын

@@MoinKhan-rl3rx I think you mean stent. Anyway I have no idea.

@ScienceAppliedForGood Ай бұрын

A good dissection of a bad paper. My take is there is no point in doing epidemiological studies at all.

@seniorbob2180 Ай бұрын

they considered 100g carbs/day as low carb? lol omfg. That's 2 1/2 cans of Coke.

@PeCo333 Ай бұрын

Not true. And he doesn't recommend Coke 😅

@seniorbob2180 Ай бұрын

@@PeCo333 what's not true? The 100g considered keto part? Well, he said that the study considered it so. The coke part? Coke is 38-42g/can. Math.

@PeCo333 Ай бұрын

@@seniorbob2180 We should not speak about Coke. 50 - 100g carbs a day are low carb.

@seniorbob2180 Ай бұрын

@@PeCo333 Oh now you're changing the goal posts to 50g, right. What's the next change you've got in mind there, chief? Don't bother replying, I'm not listening.

@PeCo333 Ай бұрын

@@seniorbob2180 I didn't change to 50 g, but from 50 to 100g. What's really your problem?

@wocket42 Ай бұрын

Should I win the lottery I will do a study called "effects of a balanced carbohydrate diert" and define "balanced" as 1kg of carbs per day. Results will be interesting.

@myoung48281 Ай бұрын

So it's 3 epidemiological studies all showing low carb intake is related to mortality and heart disease in a not desirable way. The criticism is the same for all studies of these kinds, they are not controlled, not randomized studies. If they favor your point of view these kinds of studies are used as evidence for, and if against they are proclaimed invalid. Let's see the studies showing low carb diets long term are beneficial for heart health and mortality.

@DebGeeDee 6 күн бұрын

Why did the journal publish the study? It obviously adds absolutely nothing to this body of knowledge- almost unethical. Critical appraisal needs to be taught in high school due to expanse of social media ‘scientists’.