Fossil barnacles hold the secrets to prehistoric whale migration
We’ve finally figured out ‘STEVE’ and why he shines so bright
Eating too much sugar causes fruit flies to eat more sugar
The dress rehearsal for that one small step
Improving memory in older adults with electrical stimulation
It’s all over the news – a new royal has been born. Prince Harry’s glowing announcement of his son’s birth was delightful. He was awed and in love. But how much does he owe the public about the details and photos, and everything else people want to kno…
First up, the quantity and quality of calories matter both to health and to weight. You can’t gain without a surplus. You can’t lose without a deficit. And the quality of the calories you’re consuming will affect health and satiety which in turn will affect the quantity of them that you consume. Moreover, the bioavailable calories you consume will differ by food, and also likely differs by individual (which is why some gain and lose with more ease than others).
Next up, we’re crappy food historians. We may forget portions, choices, or both, not all the time, but certainly some of the time. We can’t possibly know what’s in meals we haven’t cooked ourselves. And even if we are cooking ourselves, most aren’t going to be weighing and measuring everything and eyes are terrible at both.
And a recent study confirms some of the above whereby researchers looking at users of myfitnesspal found the average user was missing nearly a meal’s worth of calories a day (445). Yet studies on food diary use pretty much invariably report they markedly benefit weight loss efforts.
Personally, though I think having some rough inaccurate sense of caloric intake is valuable (if you were in a foreign country and didn’t know the exchange rate, price tags would still be somewhat helpful), more valuable is the use of the food diary to remind yourself that you’re trying to eat thoughtfully and likely differently.
Human nature being what it is, without a system designed to consciously remind you to change your usual default behaviours, you’re likely to drift back to those behaviours, healthy or not, and a food diary, even if inaccurate, if kept in real-time, will remind you many times a day that you’re trying to change.
So long as you’re not using your food diary as a tool of judgment, as it’s not meant to be there to make you feel badly about your choices, chances are it’ll be of benefit, and likely it’ll be of benefit regardless of what it is you’re tracking (calories, macros, carbs, whatever) and even if inaccurate, because it’s primary job is to serve you as your constant change reminder service, not as your judge and jury.
|Lori Gilbert-Kaye, may her memory be a blessing, murdered for being Jewish|
A few days ago it was Holocaust Memorial Day, the day we commemorate the murder of 1 out of every 3 living Jews on earth prior to World War II. A week ago saw another murder for the crime of being Jewish, this time in California. Before that it was Pittsburgh. Though there’s not much I can do about any of this, at least I can call your attention to these three pieces that try to weave it all together
Daniella Greenbaum Davis, in The Spectator, on antisemitism’s new normal.
Rabbi Yisroel Goldstein, in The New York Times, on how being almost killed by a terrorist last week has affected his resolve.
Carly Pidlis, in Tablet Magazine, on how Jews can no longer simply consider themselves safe in America.
How can you tell if a reef is healthy? Check its halo
Air conditioners could be used for carbon capture to make oil from the atmosphere
Hippos provide the skeletons for freshwater algae
Do we know how late is too late to revive a brain?
[(A guest blogpost by my slightly right-of-centre friend Peter. Enjoy. Discuss. ~DD)] Nobody really likes him. At least, nobody will publicly defend his character and integrity. He has no discernible political principles. He is a vainglorious boaster and moral alley-cat…
To be taken with a grain of dietary recall data, but a new study, Children’s Attention-Deficit/Hyperactivity Disorder Symptoms Predict Lower Diet Quality but Not Vice Versa: Results from Bidirectional Analyses in a Population-Based Cohort, found that an ADHD diagnosis led children to a less healthy diet, whereas less healthy diets did not lead children to ADHD.
The study was conducted in the Netherlands and it followed 3,680 children starting at age 6 and then ending when they reached the age of 10.
Put plainly, though more ADHD symptoms at age 6 were associated with less healthy diets at age 8, diet quality at age 8 was not associated with ADHD symptoms at age 10.
There are a number of proposed pathways to help explain how ADHD might affect diet quality. ADHD and its impulsivity may increase the risk of binge eating or loss of control eating, and the impact of ADHD on neurotransmitters may affect hunger and fullness. It’s also possible that some parents of children with ADHD may offer foods their children prefer in order to decrease risk of conflict and/or reward desired behaviour.
Clearly more research on this would be welcome.
Danielle Kosecki, in Medium, with her defense of Freds (less serious cyclists, and disclosure, I am one).
Mallory Picket, in The New York Times Magazine, on sexism in science’s highest echelons.
Anonymous, in The Cut, on marriage with an anti-vaxxer.
Taking the observer out of quantum mechanics in new book: ‘Einstein’s Unfinished Revolution’
A comet inside an asteroid fell to Earth as a meteorite
Chernobyl’s wildlife still suffering from radiation damage 33 years later
Oilsands greenhouse gas emissions are higher than we calculated
One of the possible reasons that in freely living humans exercise doesn’t seem to add up to weight loss as math might predict is that freely living humans might eat back their burned calories. Some may do so consequent to increased hunger. Others to a sense of virtue and the inclination to reward themselves for their hard work. Others still because marketing has convinced them that they must refuel, recover, replenish, etc..
A new study,Activity energy expenditure is an independent predictor of energy intake in humans, published this year in the International Journal of Obesity, set out to look at this phenomenon.
Now to be clear, the study certainly wasn’t designed to explain exercise’s impact on weight. It was just 7 days long and it involved the retrospective analysis of data from 5 prior studies and did not directly measure energy expenditure or energy intake. Instead researchers utilized estimated energy expenditure by way of heart rate and indirect calorimetry data, and energy intake by way of known to be problematic food diaries.
My stats skills are nowhere near good enough to comment on the various treatments of the data, but here’s the scatter plot of the impact of energy expenditure on energy intake.
The increase in energy intake the authors attributed to energy expenditure wasn’t high, roughly 3% of total daily calories (around 70 in this sample), an amount too small to explain away exercise’s often uninspiring impact on weight loss.
Truth be told, I’d have predicted the difference to be larger as eating more consequent to exercise is something I know many people do for one or more of the various reasons mentioned above.
Of course none of this changes the fact that exercise has tremendous health benefits at any weight and that weight shouldn’t be your driver for upping yours if you’re able.
They really did it. Scientists put human brain gene into monkeys
Temperature play a key role in mating dances.
Life on exoplanets could be found within our lifetime, according to NASA scientists
Heavy metals in their blood would kill others, but not the great white shark
Our faces evolved to reveal and communicate our emotions
10,000 year-old urine helps reveal the history of animal domestication
New hominin discovery sprouts a new branch on human family tree
Examination of dolphin clitoris reveals they enjoy sex too
How ketamine can work to magically, if temporarily, lift depression
Black hole image confirms the entire story of general relativity
I don’t like the directions taken; cutting healthcare spending below the rate of inflation, and etc. But this government in this budget is definitely no Mike Harris Mark II. Mind you, they’ll never meet their deficit reduction targets…
Do we need a better roadside test for pot impairment?
Ground giving away in Canadian Arctic as climate warms