The poor, misunderstood calorie

Artificial light at night: effects on cardiovascular disease

Posted on September 8, 2018 | Leave a comment

There is now increasing evidence that exposure to artificial light in the evening and at night increases the risk of cardiovascular disease (Moore-Ede, 2018). Because most “energy efficient” LED light are rich in blue wavelengths, the use of these lights can trigger disease processes involved in hypertension, atherosclerosis, and cardiovascular disease.

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Circadian disruption, melatonin suppression & phase shifting, and activation of chronic inflammatory pathways.

Sunlight during the day is protective; artificial light at night is harmful. Blue light filters on your smart devices and hot blue blockers on your face are protective.

As always, the effects are most pronounced in actual shift workers who see 20-40% increases in risk of cardiovascular disease, heart attacks, and coronary artery disease…

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Posted in Advanced nutrition, angiotensin, Bromocriptine, Cabergoline, chronopharmacology, circadian, Dopamine, melatonin, nicotine, sleep, Sun, vasopressin, Vitamin D

Tagged circadian rhythm

Artificial light at night: effects on breast & prostate cancer

Posted on September 1, 2018 | Leave a comment

There is now substantial evidence that exposure to artificial light at night (ALAN) increases the risk of breast and prostate cancer (Moore-Ede, 2018).

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MOA of ALAN: circadian disruption & phase shifting, melatonin-suppression, and accelerated unsuppressed tumor growth.

Sunlight during the day is protective. Artificial light at night is harmful.

ALAN-induced melatonin-suppression and circadian disruption increases the risk for certain endocrine-sensitive cancers. While this is most blatantly manifested in shift-workers, it also holds for people who sleep with the lights on and those exposed to, for example, street lamps shining light through bedroom windows at night.

50% increased risk of breast cancer in female shift workers. Up to 200% increased risk prostate cancer in male shift workers.

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Posted in angiotensin, Bromocriptine, Cabergoline, cancer, chronopharmacology, Dopamine, melatonin, mortality, sex, sleep, Sun, testosterone, vasopressin, Vitamin D

Tagged circadian rhythm, melatonin

Artificial light at night: effects on obesity and diabetes

Posted on August 23, 2018 | Leave a comment

“There is now substantial evidence that exposure to blue-rich light in the evening and at night increases the risk of obesity and diabetes (Moore-Ede 2018)”

I concur.

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The upstream mediator is disruption of the circadian system. More downstream is melatonin suppression and phase shifting which promote nutrient anti-partitioning, late eating patterns, mindlessly poorer food choices, etc., etc.

Don’t get me wrong, sunlight in the morning and during the day is great… it’s even protective against artificial light at night (ALAN)-induced melatonin suppression… it’s just this ALAN we’re talking about.

Obesity is almost doubled in people who sleep with the lights on at night. I have no idea how this happens, maybe by accident, or they just fall asleep reading or something. But for whatever reason, risk of obesity = doubled.

Many more facts, figures, and what to do about it… but for that, head over to Patreon! Five bucks a month for full access and there are many other options. It’s ad-free and you can cancel if it sucks 🙂

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Posted in Advanced nutrition, angiotensin, Bromocriptine, Cabergoline, chronopharmacology, circadian, Dopamine, melatonin, sex, sleep, Sun, vasopressin

Tagged circadian rhythm, melatonin

Study: protein & seafood. They work!

Posted on August 15, 2018 | Leave a comment

I liked this study for a couple reasons:

Effect of combined use of a low(ish)-carbohydrate, high-protein diet with omega-3 polyunsaturated fatty acid supplementation on glycemic control in newly diagnosed type 2 diabetes: a randomized, double-blind, parallel-controlled trial (Liu et al., 2018)

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There were FOUR groups: 1) high-carb, low protein (HCLP, aka CONtrol group); 2) LCHP; 3) HCLP+n3; and 4) LCHP+n3. So, instead of just taking a group of people, putting them on LCHP+n3 and comparing the results to baseline, they actually controlled for the variables independently.

All groups were assign 30% fat and the protein was either 17% or 28%. THIS WAS CONFIRMED with serum urea nitrogen and you know how much I like biomarkers! n3 status of the n3 groups were confirmed with plasma n3’s and you know how much I like biomarkers!

Some more details on the study design…

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Posted in Advanced nutrition, diet, Energy balance, Fish, insulin, Protein

Tagged diet, protein

Regular circadian effects vs. effects of circadian misalignment.

Posted on August 7, 2018 | Leave a comment

Endogenous circadian system and circadian misalignment impact glucose tolerance via separate mechanisms in humans (Morris et al., 2015)

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“Glucose tolerance is lower in the evening and at night than in the morning.”

THE FIRST FRIGGIN’ LINE! Come on fam, please stop arguing against this fact. A basic tenet of circadian biology is our preparedness for food intake in the morning. “Skipping breakfast” is not hormetic. It’s CICO and not in a good way. Metabolism is gimped at night, so you end up having to eat less so you’re double-restricted (no breakfast and less food at night).

The point of this study was two-fold, in my estimation: 1) determine the normal circadian influences on glucose tolerance; and 2) influence of circadian misalignment.

When comparing the glycemic response to identical meals ingested after an identical period of fasting, either at 8 AM (subjective morning or “breakfast”) or 8 PM (subjective evening or “dinner”): postprandial glucose was 17% higher (ie, lower glucose tolerance) in the biological evening (8:00 PM) than morning (8:00 AM; ie, a circadian phase effect).

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Intermittent vs. Continuous Energy Restriction: Study vs. Headlines

Posted on July 30, 2018 | Leave a comment

It started here: Effect of intermittent versus continuous energy restriction on weight loss, maintenance and cardiometabolic risk: A randomized 1-year trial (Sundfor et al., 2018)

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I’ll just leave this here https://t.co/WeMdfeU9ss

— Bill Lagakos (@CaloriesProper) July 29, 2018

If intermittent fasting (IF) works for you, awesome. If not, don’t worry, you’re not missing out on much. The above study was a year long and showed no difference between IF and plain old just cutting out some junk food. IF group lost 8 kg, regular dieters lost 9 kg.

“Intermittent and continuous energy restriction resulted in similar weight loss after one year in men and women with obesity.”

In this study, the IF protocol they employed was most similar to 5:2 wherein you eat normally for five days a week and consume minimal food on two non-consecutive days.

“Feeling of hunger may limit long-term adherence to intermittent energy restriction.” [this seems somewhat unwarranted because, well, they made it a whole year which is pretty “long-term,” imo] [although they consistently reported higher feelings of hunger which may be unpleasant]

Backlash to the above tweet was savage lol and a lot of people cited a 2016 study with which I was familiar… that doesn’t really make their case…

HEADLINE vs. STUDY, people

disclaimer: if you’re hell bent on IF, I’m still a little biased toward #eTRF

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LOOK AT THE DATA, PEOPLE.

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Posted in Uncategorized

Anabolic Heterogeneity Following Resistance Training: A Role for Circadian Rhythm?

Posted on July 23, 2018 | Leave a comment

YES!

Resistance exercise stimulates muscle growth, strength, and functionality (Camera, 2018), although the inter-individual variability in response is hyooge. People used to think there were “responders” and “non-responders,” although now we know everyone benefits but there’s a wide spectrum. WHY?

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Exercise timing? There are definitely circadian clock genes and rhythmic expression of many genes involved in muscle growth, strength, and functionality.

Physical inactivity and sedentary behavior in general is bad. Physical activity is good. Load-bearing resistance is exercise is better. Is proper circadian timed exercise even better? Can you get slightly better benefits at the same workload?

WHY is this important?!

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Posted in Advanced nutrition, circadian, Exercise, muscle, strength, Sun

Tagged circadian rhythm, melatonin, muscle, nutrition, protein

Salty blood, sweat, and tears. But do I need to supplement sodium?

Posted on July 15, 2018 | Leave a comment

This was meant to be a neutral boring non-tweet:

No one with an actual education in nutrition really cares about salt intake.

— Bill Lagakos (@CaloriesProper) July 12, 2018

But it was met with a hella-backlash. I was being half-serious: in undergrad and grad school, we learned about many different diets, the studies that supported or debunked them, and whether they made sense nutrition-wise. We didn’t spend much time at all on the DASH diet, sodium-supplemented or -restricted diets, etc.

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Sodium chloride vs. potassium bicarbonate? Maybe.

During the mineral portion of one class, yes, we studied the role of sodium in biology. And in a section on nutrition for the elderly, we learned the ability to “taste” declines with age, Tl;dr: old people stop eating meat because it tastes like cardboard and their health is improved by going from zero meat intake to some meat intake, and monosodium glutatamate (MSG) as a seasoning agent helps in this #context.

But as performance aid?

…I’m not anti- or pro-salt. If you like it on your food, have at it! There are no magic tricks. Some of the backlash I received on Twitter was concerns that ultra-endurance athletes use up sodium faster and sweat out more, therefore need to supplement it. Well, not really….

Are there other reasons to take some minerals like magnesium? Maybe.

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Posted in Advanced nutrition, endurance, Exercise

“The Big Breakfast Study” !

Posted on July 7, 2018 | 1 comment

Chrono-nutrition influence on energy expenditure and body weight (Ruddick-Collins et al., 2018) HT/ Robb Wolf

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“A growing body of evidence highlights the importance of the biological clock as a modulator of energy balance and metabolism. Recent studies in humans have shown that ingested calories are apparently utilized more efficiently in the morning than in the evening and this is manifest through improved weight loss, even under iso-energetic calorie intake.” YES!!!

Book recommendation: Why We Sleep

People eating 3 square meals a day shouldn’t be ingesting >40% of their calories late at night. <33% prior to sunset is more like it.

“The SCN of the hypothalamus, the ‘master clock,’ is primarily regulated by the light/dark cycles in order to synchronise the body to the light cycle or solar day…” but it also must by sync’d to the peripheral clocks! aka ‘food-entrainable oscillators’ (FEO).

Sure, caffeine and exercise can influence the liver and skeletal muscle clocks, respectively, but for full central & peripheral co-entrainment: FOOD and LIGHT in the morning (exercise and caffeine are optional for this).

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Posted in Advanced nutrition, circadian, Energy balance, Ketosis, Protein, Sun

Tagged circadian rhythm, ketosis

Intermittent Fasting and Goalposts

Posted on June 30, 2018 | Leave a comment

I may come across as harsh on Intermittent Fasting (IF) and I’d like to be clear about something. I’m not saying IF will make you gain body fat or die a slow and painful death. I am saying the quality of evidence presented in human studies suggesting it will benefit you somehow is #weaksauce. Further, I don’t really like the idea of huge refeeds. Like, how can 2000 kcals in one sitting be remotely healthy?

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Metabolic. Mayhem.

You may have noticed many guru’s sliding away from “intermittent fasting” and “skipping breakfast” and toward promoting a more circadian-appropriate feeding pattern. That’s because it’s about when you eat, not the precise duration of the feeding window.

The studies have been done:

Jacobs & Hirsh showed that eating all your food for breakfast is more conducive to weight loss than eating all your food for dinner.
Melatonin sensitizes the system, priming your body for optimal nutrient partitioning in the morning.
Metabolism is gimped at night.
“early Time-Restricted Feeding” (eTRF) works even in the absence of weight loss.
Your metabolism is naturally more ketogenic with an earlier feeding window.

Which brings me to the current IF study #weaksauce du jour and it’s implications. But for that you’re gonna have to head on over to Patreon! Five bucks a month gets you access to all articles and there are many other options. It’s ad-free and you can cancel if it sucks 🙂

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