Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

People with low BMI aren't more active, they are just less hungry, 'run hotter'

sciencedaily.com

Post reply on HN
Print view View original

11–20 of 350 posts

Re: People with low BMI aren't more active, they are just less hungry, 'run hotter'

#11

Post by lazide »

phkahler wrote: post #8
_aavaa_ wrote: post #7

Earlier quoted context omitted.

I don't see how that has any impact on my point. title: "People with low BMI aren't more active, *they are just less hungry*, 'run hotter'" quotation: "they didn't measure what the participants were actually eating or *their feelings of satiation or satiety*" The title is factually untrue. You can't claim that people with lower BMI "are just less hungry" if you don't measure how hungry they feel.

Depending what you eat, it's possible to basically eat all you want and still lose weight. One example is learning to love non-carb foods - eat all the antipasto salad and steak you like (expensive AF yes).

Which doesn’t refute the point the post you are replying to made at all.

Re: People with low BMI aren't more active, they are just less hungry, 'run hotter'

#12

Post by gjsman-1000 »

To be fully honest - I can relate to this. During my college years, I ate a full-size burger, potato fries, and soda every day for lunch for ~2 years. I never got fat and retained a healthy BMI, never crossing 200lbs despite being a 6'2" male - even though I almost never exercised and spent almost all day sitting working in the Math Lab. I did skip breakfast regularly so maybe that had something to do with it. My family on seeing the portion size (particularly the potato fries - think 3x a McDonalds large fries) thought it must be my brain consuming those calories or something.

Re: People with low BMI aren't more active, they are just less hungry, 'run hotter'

#13

Post by BitwiseFool »

gjsman-1000 wrote: post #10
shay_ker wrote: post #9

Is this paper peer-reviewed?

Does it matter? Many scientists in the know say that peer review is as good as a trashy spam filter these days. This isn't to say that it is absolutely useless, more that it is very overrated.

I like to think of "peer review" in the same way as "peer code review". Just because someone looked at it and approved it doesn't mean that it is free of shortcomings and defects.

Re: People with low BMI aren't more active, they are just less hungry, 'run hotter'

#14

Post by gjsman-1000 »

BitwiseFool wrote: post #13
gjsman-1000 wrote: post #10

Earlier quoted context omitted.

Does it matter? Many scientists in the know say that peer review is as good as a trashy spam filter these days. This isn't to say that it is absolutely useless, more that it is very overrated.

I like to think of "peer review" in the same way as "peer code review". Just because someone looked at it and approved it doesn't mean that it is free of shortcomings and defects.

Not just "peer code review" from a good friend or someone working on the same project as you - a review from somebody who has a ton of stuff to review at once, in many different areas, and very limited time to do it.

Re: People with low BMI aren't more active, they are just less hungry, 'run hotter'

#15

Post by FollowingTheDao »

My family has Sami heritage, we run cold. My average body temp is 96.8 degrees. We also have trouble with hyperlipidemia, obesity, and early heart disease.

So the genetics of all of this will be interesting. I have managed to avoid my family curse by eating pretty much only fish and game meat, like a Sami. And I do not eat much. It was the only diet that would raise my HDL.

Re: People with low BMI aren't more active, they are just less hungry, 'run hotter'

#16

Post by tapland »

causi wrote: post #5
arcanus wrote: post #3

"We expected to find that these people are really active and to have high activity metabolic rates matched by high food intakes," says corresponding author John Speakman, a professor at the Shenzhen Institutes of Advanced Technology in China and the University of Aberdeen in the UK. "It turns out that something rather different is going on. They had lower food intakes and lower activity, as well as surprisingly highe…

Makes me wonder, if thyroid disorders can cause obesity, can thyroid-modifying therapy or exogenous thyroid hormones treat obesity?

I've been on and off thyroid medication since my early teens and bounced about 40 lbs up and down during it. My hormone issues were first found because I gained weight while being a competitive young athlete.

I think the same range is pretty common for people with certain other medications.

The whole dieting discussion, all nutrition advice, kcal in/out goes out the window when your metabolism is a black box.

Afaik there still isn't any study showing that any dieting works long term? So if we want to fight an obesity epidemic more needs to be done than to shift blame to affected individuals.

Re: People with low BMI aren't more active, they are just less hungry, 'run hotter'

#17

Post by burlesona »

_aavaa_ wrote: post #7
burlesona wrote: post #4

Earlier quoted context omitted.

I think they are saying the caloric intake was measured, but they didn’t distinguish between what kind of food the calories were coming from: > The participants were monitored for two weeks. Their food intake was measured with an isotope-based technique called the doubly-labeled water method, which assesses energy expenditure based on the difference between the turnover rates of hydrogen and oxygen in body water as a…

I don't see how that has any impact on my point. title: "People with low BMI aren't more active, *they are just less hungry*, 'run hotter'" quotation: "they didn't measure what the participants were actually eating or *their feelings of satiation or satiety*" The title is factually untrue. You can't claim that people with lower BMI "are just less hungry" if you don't measure how hungry they feel.

OK, I see what you mean. However I would interpret the fact that people consistently ate less as strongly implying that they were less hungry in the first place. While one individual might go around hungry, in general people don’t experience hunger if they don’t have to.

I think if they had substituted “eat less” for “are less hungry” the title would be fair.

Re: People with low BMI aren't more active, they are just less hungry, 'run hotter'

#18

Post by jstanley »

burlesona wrote: post #4
_aavaa_ wrote: post #2

"The investigators acknowledge some limitations on this research, including the fact that although they measured food intake, *they didn't measure what the participants were actually eating or their feelings of satiation or satiety*." This seems to directly contradict the title. EDIT: What food they are eating and how satiating that food may be is irrelevant . They did not measure the participants feelings of satiati…

I think they are saying the caloric intake was measured, but they didn’t distinguish between what kind of food the calories were coming from: > The participants were monitored for two weeks. Their food intake was measured with an isotope-based technique called the doubly-labeled water method, which assesses energy expenditure based on the difference between the turnover rates of hydrogen and oxygen in body water as a…

Title says they are less hungry, researchers say they didn't measure feelings of satisfaction or satiety. I think that contradcits the title.

Re: People with low BMI aren't more active, they are just less hungry, 'run hotter'

#19

Post by FollowingTheDao »

phkahler wrote: post #8
_aavaa_ wrote: post #7

Earlier quoted context omitted.

I don't see how that has any impact on my point. title: "People with low BMI aren't more active, *they are just less hungry*, 'run hotter'" quotation: "they didn't measure what the participants were actually eating or *their feelings of satiation or satiety*" The title is factually untrue. You can't claim that people with lower BMI "are just less hungry" if you don't measure how hungry they feel.

Depending what you eat, it's possible to basically eat all you want and still lose weight. One example is learning to love non-carb foods - eat all the antipasto salad and steak you like (expensive AF yes).

> One example is learning to love non-carb foods

This could be true for some people, but not for everyone, which is where this research will lead.

With all the love of science here why does no one think genetics matters when it comes to diet and health?

Re: People with low BMI aren't more active, they are just less hungry, 'run hotter'

#20

Post by karaterobot »

shay_ker wrote: post #9

Is this paper peer-reviewed?

The linked article is a press release referencing an article from a peer reviewed journal called Cell Metabolism. You can find this out by scrolling down to the citation at the bottom, which links to the article, and from there you can get to the journal website.
Post reply on HN