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May 10 • 4 tweets • 6 min read
1/Last weekend at @MetabolicSummit was incredible. Really fantastic speakers and guests discussing metabolism research around microbiome, circadian cycles, muscle mass and longevity (shout out @DrRagnar) and yes, even #LMHRs got lots of airtime (props to @bschermd & @JaimeSeeman)
2/ Wonderful to catch up with so many peeps, like the incomparable @TuitNutrition, @bschermd, @LuciaAronica, @ChrisPalmerMD — and the @DietDoctor team, @tednaiman, @LowCarbRD, @DrEenfeldt, & @bschermd.
3/ Also, the Gala event Saturday night was bitter sweet opening with a recent, yet very inspiring interview from @DrSarahHallberg before her passing, but ending with a packed dance floor and music to finish the night.
4/ Lastly, I want to give a special shout out to my good friend and colleague, @siobhan_huggins. Thanks for the extra arm twist to come — it was worth the added schedule-tightening.

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More from @realDaveFeldman

Dave Feldman Profile picture
Apr 20
1/ Always honored to have your added opinions, @Lpa_Doc and I'll again mention I'm a tremendous fan of your work (and the #OxPL assay, btw)

The #LMHR phenotype is potentially providing a new window of investigation into lipid metabolism, but its high LDL risk level is unclear...
2/ ... Hence the importance of the #LMHRstudy (still recruiting, btw -- see LMHRstudy.com for details)

In the mean time, we regularly and often emphasize everyone should work with their doctor and understand the guidelines recommend against high cholesterol...
3/ ... There are many like this pt who are in the unusual position of having a severe medical condition that appears to be uniquely resolved through a very carb restricted diet.

With respect, the patient didn't immediately refuse any form of treatment...
Read 6 tweets
Dave Feldman Profile picture
Apr 18
1/4 Retweeting via @Lpa_Doc -- click within to read 3 part thread. 👇

Also, per our video abstract:
"We remind viewers that existing guidelines and every major scientific institution around heart disease strongly advises against high cholesterol levels."
2/4 And,"While these data on our patient are comprehensive and provide potential new insights, they are limited in scope and timespan. It’s certainly possible this patient is an outlier, or that their progression of plaque will take place later, or many other such possibilities."
3/4 In short, while we appreciate the opportunity to explore the Lipid Energy Model (#LEM paper forthcoming) and share novel data (such as this case study), we continue to emphasize this is uncharted territory and largely considered substantially risky within Lipidology.
Read 4 tweets
Dave Feldman Profile picture
Apr 17
1/4 FWIW -- the recent WDHR study using CCTA provided some very powerful data on this very question: jamanetwork.com/journals/jaman…

[Note the mean age was 58] -- "Second, we observed absence of plaque in 46.2% of patients with LDL-C levels of at least 190 mg/dL."...
2/4 ... "This proportion was similar to that in patients with lower LDL-C levels. Third, CCTA-ascertained absence of CAC indicated no detectable plaque in 86.8% of patients, including those with LDL-C levels greater than 190 mg/dL."
3/4 To be sure -- "However, the prevalence of noncalcified plaque increased with higher LDL-C levels."

This isn't too surprising where not stratifying for metabolic health and other such higher associative indicators at those levels...
Read 4 tweets
Dave Feldman Profile picture
Apr 13
1/ A lot of times polls like these are more interesting for the talk they generate than even the results themselves.

Here are a few featured comments and my added thoughts...
2/ A lot of people wanted greater specificity on what I meant by "rich" -- I left this more to the reader's interpretation. IMO, I'd have thought this would be in a highest quantile, such as top 1/3rd or 4th of typical aggregate diet.

3/ @MichaelMindrum mentioned the poll results might skew a bit too much toward expectation of SFA not causing CVD given those likely following my account -- I don't disagree.

Hence my interest in direct study on health conscious populations consuming high SFA (like many #LMHRs)
Read 5 tweets
Dave Feldman Profile picture
Apr 8
📊Polls ahead of #KetoSaltLake

Poll (1/4)
Lean Mass Hyper-responders (#LMHRs) are defined by:

+⬆️#LDL #Cholesterol at 190mg (5.17mm) or higher,
+⬆️#HDL-C 80 (2.07) or higher &
+⬇️#Triglycerides of 70 (0.79) or lower

In your opinion, cardio risk level of this profile is likely
Poll (2/4)
Many demonstrating the #LMHR phenotype (but not all) consume a diet...

High in animal protein
High in red meat
High in saturated fat

In your opinion, if we were to further stratify the #LMHR population to those with the above diet, their cardio risk level would be...
Poll (3/4)

When did you first hear of the Lean Mass Hyper-responder profile?
Read 5 tweets
Dave Feldman Profile picture
Mar 9
1/ The scientist in me is looking forward to this new, real world data emerging on #HealthConscious #Carnivores.

It will help provide data that helps confirm/disconfirm the long standing assumption that "healthy user bias" has been effectively adjusted for by researchers...
2/ If you're not familiar with "healthy user bias" (HUB), it's a known potential confounder where those who are doing what they feel is healthy in one regard (such as avoidance of red meat), can often have other likewise "healthy habits", such as more exercise, less smoking, etc
3/ This is a big problem with epidemiology given the overlap is quite common.

To mitigate this, there are efforts to adjust for these confounders such as through statistical techniques (ie sensitivity analyses)
Read 6 tweets

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