Tag Archives: carbs

TRP channels in the Tx of muscle pain & cramps

NSAIDs are OK for muscle pain, but may hinder training progress in the long run (eg, Shoenfeld 2012 and Mackey 2013). The electrolyte theory of muscle cramps has been kinda debunked in some contexts (eg, Braulick et al., 2013, Miller 2014, and McKenney et al., 2015)… although I still recommend all the broths & stocks (homemade, store-bought, chicken, beef, seafood, etc.) for just about everything. 20% of Kettle & Fire broths through this link!

But even when pickle juice works (eg, Miller et al., 2010), it kicks in way sooner than if it worked via replenishing electrolytes – more likely works via the acidity activating specific ion channels.

What do we have left?

Google Image Search came through pretty epic for this…

 

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An interesting theory on the treatment of muscle cramps

Being the nerd I am, after experiencing a few days of painful muscle cramps (which I wrote about here), I went to Google like a madman.
Here’s what I learned from the experience and subsequent Googling.
Most things I wrote in the original post still stand. But there are a ton of completely different types of muscle cramps; those associated with cirrhosis, MS, pregnancy, dialysis, idiopathic nocturnal, etc.
Number 1 mandatory advice: do all the long-term stuff like broths, (20% off Kettle & Fire!) potassium, mag, etc (even though all of these things have mixed findings; they might work for your specific type of cramp and are unlikely to cause harm). But for immediate management of painful cramping, you may need to bite the bullet and take a muscle relaxer or benzo or something.
A lot of this post is inspired by a crazy theory touted by a new anti-cramp product (targeted at yet another type of cramp, “exercise-associated muscle cramp” [EAMC]), but the explanation of it’s mechanism is super-interesting.

I still stand by the previous interventions, except according to a few case studies and a lot of anecdotes, pickle juice can work within 1-2 minutes! That observation was part of the basis of developing this product. Some people think the acidity in pickle juice activates gastrointestinal TRP receptors (see below), and I’m totally cool with all kinds of vinegar
But I digress.

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Ketosis in an evolutionary context

Humans are unique in their remarkable ability to enter ketosis.  They’re also situated near the top of the food chain.  Coincidence?

During starvation, humans rapidly enter ketosis; they do this better than king penguins, and bears don’t do it at all.

Starvation ketosis

 

Starvation ketosis

Humans maintain a high level of functionality during starvation.  We can still hunt & plan; some would even argue it’s a more finely tuned state, cognitively.  And that’s important, because if we became progressively weaker and slower, chances of acquiring food would rapidly decline.

Perhaps this is why fasting bears just sleep most of the time: no ketones = no bueno..?

Observation: chronic ketosis is relatively rare in nature. This doen’t mean animals evolved a protective  mechanism against ketosis.

 

 

Animals with a low brain/carcass weight ratio (ie, small brain) don’t need it. Babies and children have a higher brain/carcass weight ratio, so they develop ketosis more rapidly than adults. Is this a harmful process? No, more likely an evolutionary adaptation which supports the brain.

ketones age

The brain of newborn babies consumes a huge amount of total daily energy, and nearly half comes from ketones.  A week or so later, even after the carbohydrate content of breast milk increases, they still don’t get “kicked out of ketosis” (Bourneres et al., 1986).  If this were a harmful state, why would Nature have done this?  …and all those anecdotes, like babies learn at incredibly rapid rates… coincidence?  Maybe they’re myths.  Maybe not.




 

Ketosis in the animal kingdom

Imagine a hibernating bear: huge adipose tissue but small brain fuel requirement relative to body size and total energy expenditure.  No ketosis, because brain accounts for less than 5% of total metabolism.  In adult humans, this is around 19-23%, and babies are much higher (eg, Cahill and Veech, 2003Hayes et al., 2012).

 

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On the impact of diet on circadian phase setting

We’ve seen that meal size and frequency can influence circadian rhythms, but here are some examples of how nutrients can, too.

Circadian phase advance: going to bed earlier, waking up earlier.  Blue blockers at sunset, bright light at sunrise.  Flying east.  Autumn.

Circadian phase delay: staying up late, sleeping in.  Flying west.  Spring.  Using smart phones, tablets, and iPads in bed at night.  Light pollution.

Relative to adolescents, infants and children are circadian phase advanced.  This is part of what is fueling the movement to delay high school start times.  Kids are mentally better prepared to work later in the day.  With early school start times, performance is down in the morning, but they kill it on video games after school.  Delaying start time by an hour won’t totally fix this, but could help.

 

 

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Low carb, low glycemic index, or something else entirely

Why Low Carb?

OmniCarb (Sacks et al., 2014)

Study design & results in a nutshell:

5 weeks, low(ish) vs. high carb (40 vs. 58%) with the calorie difference split between protein (23 vs. 16%) and fat (37 vs. 27%).  In other words, the low(ish) carb diet was higher in protein and fat.  And there was 2 versions of each diet —  a high and low glycemic index.  Lots of crossing over; all in all, weak intervention but decent study design & execution.

Aaaand nothingsauce nothingburger.  Goal was insulin sensitivity, not weight loss.

 

glucose and insulin

 

 

 

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Endurance Performance Doesn’t Decline on a Low Carb Diet

The new study by Zinn and colleagues doesn’t debunk ketoadaptation. And the authors agree!

In brief, it was 5 ~50-year old recreational endurance athletes. They’ve been training a lot for a very long time. In other words, one way to view this study is the opposite of n00b gainz. Experienced exercisers don’t typically make gains in 10 weeks without drastically changing their training program or increasing protein intake – neither of which occurred in this study.

 

 

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Long-term fat adaptation.

Ketoadaptation

More on physical performance and ketoadaptation

A timeline of ketoadaptation.

 

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Allu-lujah: the new Quest Hero bars

On that sweetener in the new Quest Hero bars: allulose (formerly known as D-Psicose).

1. I’m sure they were quick to adopt the alternate nomenclature because it’s hard not so say Piss-cose lol

2. Nutrition-wise, Hero bars are basically Quest Lite. A bit less fibre. But I really think they’re getting much better at texture.

3. On to allulose. It’s not really like sugar – even though the FDA says it must be labeled as such – because it carries virtually no calories and actually blunts the blood glucose spike from a meal.

 

Exhibit A. n=20 healthy peole: 7.5 g D-psicose alone, 75 g maltodextrin alone, 75 g maltodextrin + 2.5, 5, or 7.5 g D-psicose (Iida et al., 2008)

amazeballs

 

 

 

 

 

Exhibit B. n=26, zero or 5g psicose with a standardized meal (Hayashi et al., 2010). Note: there are ~12 grams of allulose in a Hero bar.

It works better in diabetics.

 

 

They did a 12-week study where psicose was dosed 3 times a day, 5 grams each time, and showed it was perfectly healthy. Some markers even improved.

 

Exhibit C. Psicose metabolism (Iida et al., 2010)

In doses ranging from 5 to 30 grams, up to 70% is excreted intact and the rest does not go to farts.

It’s virtually calorie-free:

 

 

and is barely fermentable (compared to FOS):

 

 

compare to other low carb protein bars here, get the new Quest bars here, or just buy some straight allulose and experiment with it!

Mechanisms? 1) it’s not sugar, but it still enhances glucose disposal; and 2) some animal studies show it enhances liver glucose uptake. Idk.

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FOOD PROFILE

Hey Fam, announcement: I’m moving to Patreon soon — will still post about 4-5 articles per month with at least 1 open to the public. The rest will be for Patrons. I’m still trying to figure it out and I’m open to suggestions!

 

I loved this – when describing the two study diets, which differed markedly in carb content (10% vs. 53%), the authors said they were similar in energy, protein, and “FOOD PROFILE,” meaning low-processed, lower-glycemic foods.

Non-industrial foods.

Hunger-free Diet(s).

BOOM!

Visceral adiposity and metabolic syndrome after very high-fat and low-fat isocaloric diets: a randomized controlled trial (Veum et al., 2016)

 

What happens when you give up industrial foods and start following a Hunger-free Diet (regardless of carbz)?

 

 

EVERYBODY LOSES WEIGHT

 

 

And le saturated fat? Industrial foods are the problem, not saturated fat. One group went from 48 to 31 grams per day (LFHC), the other group went from 42 to 81 (VLCHF): all metabolic parameters improved in both groups.

 




 

Even their livers shrank:

 

 

My only qualm: everyone lost a bit of muscle. NOT SURPRISING when you cut calories & protein and don’t exercise. Protein dropped by about ~25 grams in both groups. When you cut calories, you need to up protein or start lifting heavy shit otherwise you’ll lose muscle. The ketonez won’t help.

 

 

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The alkaline diet is bullshit. Proof: vinegar is the bomb

1. Whether it’s Balsamic, sherry, red wine, apple cider, or even plain distilled white, vinegar is a great condiment (P<0.05). Try cutting your favorite with a more concentrated one for more fun (be careful, it can burn you; I’d start with 1:20 or 5%).

2. It reduces the glucose and insulin response to a meal.

World’s coolest fatty acid?

 

 

Exhibit A: 20 g apple cider vinegar, 40 g water, and 1 tsp saccharine two minutes prior to “a white bagel, butter, and orange juice (87 g total carbohydrates)” (Johnston et al., 2004)

 

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High protein magic

Remission of pre-diabetes to normal glucose tolerance in obese adults with high protein versus high carbohydrate diet: randomized control trial (Stentz et al., 2016)

n=12/group

Duration = 6 months

Diet: all food provided.  Mucho gusto!

 

Critique #1: if my calculations are correct, we’re comparing low protein (0.675 g/kg) to adequate (1.35 g/kg) (not “high”).

The diets were decent:

 

 

Results:

 

 

Author’s conclusion was that this was due to high protein alone, but I’d say it was at least partially due to weight loss.  BOTH groups lost weight and improved insulin sensitivity.  Statistically significant in both groups.

 




 

Glucose (A) and insulin (B) in response to a 75g OGTT (red is high protein, blue high carb):

 

 

I still say weight loss was the primary driver, but must concede, however, that protein did have a little magical effect: high carb group actually lost slightly more weight, but insulin sensitivity improved more in the high protein group.  The high protein magic: reduced insulin secretion yet still greater reduction in glycemia.

 




 

Well, maybe not magic…

 

 

Despite having more insulin, high carbers lost slightly more fat mass but way more muscle.  THAT’s high protein magic lol

 

However, the meal tolerance tests show a slightly different trend:

 

 

We expect glucose and insulin excursions to be greater in HC (blue), because they had a high carb meal whereas the HP group had a high protein meal.  From this perspective, if we graphed the results as “change from time zero,” I think the reduction in glycemia from baseline to 6 months would be similar in both groups suggesting weight loss as bigger factor.  We’d still give some props to high protein because it lowered glucose just as much despite having less insulin.  High protein magic.

 

Note to self: gotta stop saying this was “high protein.”  1.35 g/kg is not “high,” seriously.  But still, High protein magic haha

 

Oh and one other thing, high protein usually induces greater weight loss:

Randomized trial on protein vs carbohydrate in ad libitum fat reduced diet for the treatment of obesity (Skov et al., 1999)

High protein vs high carbohydrate hypoenergetic diet for the treatment of obese hyperinsulinemic subjects (Baba et al., 1999) (not ad lib)

Comparison of high-fat and high-proein diets with a high-carbohydrate diet in insulin-resistant obese women (McAuley et al., 2005)

The effect of a low-fat, high-protein or high-carbohydrate ad libitum diiet on weight loss maintenance and metabolic risk factors (Claessens et al., 2009)

 

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