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Big Breakfast Alters Appetite, Gut Health

37 points| wjb3 | 1 hour ago |cambridge.org

23 comments

order

abainbridge|1 hour ago

The abstract begins, "Growing evidence supports early eating to control appetite and energy balance". What does that mean? My unskilled reading of it is that there is recent evidence that eating breakfast helps with weight loss. But I'm confused because there was a 2019 meta-analysis that found that eating breakfast does NOT help with weight loss. https://www.bmj.com/content/364/bmj.l42

tonyedgecombe|1 hour ago

The problem there might be what people are eating for breakfast.

chairhairair|1 hour ago

19 participants.

Oras|1 hour ago

>> therefore 19 participants completed the study (2 females and 17 males) and their data are presented throughout

Who in their own mind decided that this is a "study" worth publishing?

yokoprime|1 hour ago

Average age was 57, which may be rather high. Also: why not test out combining both diets?

mijoharas|1 hour ago

That was the point I stopped reading.

jeffbee|7 minutes ago

"big meal alters appetite" is a hell of a conclusion. Definitely going to need to study that one.

puppycodes|20 minutes ago

study says we should do a real study

hristov|1 hour ago

Interesting but they had no control.

benmaraschino|54 minutes ago

They used a crossover design, so each subject served as their own control. Not a bad choice for trials like this as you gain a lot of statistical power with fewer participants than a parallel-arm, non-crossover design.

baxtr|1 hour ago

The whole study design seems odd.

Why not add a third high-fiber + high-protein group for example?

AnEro|1 hour ago

I feel like the regular weight loss group was? Since it isn't necessarily rocket science for having mostly men stay in an easily determinable caloric deficit to lose weight. (Women have usually would be harder due to more conditions and hormone interactions that make finding a TDEE not as simple.)

Apocryphon|58 minutes ago

They didn't eat that much.

dfex|1 hour ago

It sounds like this study might have been funded by.... Big Breakfast.

I'll see myself out.

nobody083648|54 minutes ago

Dammit I came here to make this joke

mike_d|29 minutes ago

TLDR: A weight loss diet centered around a big breakfast yields weight loss results. That breakfast loaded with protein made you feel fuller and suppressed your appetite (which helps you follow a diet), where a fiber loaded diet produced more beneficial gut bacteria.

The study has a pretty small sample size, but it seems well designed and matches what you'd expect.

ethanpil|6 minutes ago

Asked Grok to ELI5 the abstract:

*Okay, kiddo, imagine this like a fun science experiment about breakfast!*

Scientists wanted to know: *"Does what you eat for breakfast matter a LOT when you're trying to lose weight?"*

They got 19 grown-ups who were carrying extra weight. Each person tried *TWO different "big-breakfast" diets* for 28 days each (like a month). - Both diets made people eat *most of their food early* (45% at breakfast, then less and less during the day). - The only big difference? The *breakfast itself*!

*Diet 1: High-Fiber Breakfast* (think lots of fruits, veggies, oats, beans — the "rough, chewy" stuff) *Diet 2: High-Protein Breakfast* (think eggs, yogurt, chicken, beans — the "filling, muscle stuff")

### What happened?

1. *Weight loss* - High-fiber breakfast diet → people lost *more weight* (about 11 pounds / 4.87 kg) - High-protein breakfast diet → people lost *a bit less* (about 8.5 pounds / 3.87 kg) → So the fiber one won for dropping pounds!

2. *Feeling hungry* - High-protein breakfast was the *winner* here. People said they felt *fuller and less hungry* all day.

3. *Tiny bugs in your tummy (gut bacteria)* - High-fiber breakfast made the *good bugs* super happy and grow way more! (Special helpful ones like "Bifido", "Faecalibacterium" and "Roseburia" — they make a healthy tummy juice called butyrate.)

### Super simple takeaway (the ELI5 version):

- Eating a *big breakfast* helps you lose weight (way better than skipping it or eating late). - If you want to *lose the most weight* and keep your tummy bugs healthy → load up on *fiber* at breakfast. - If you want to *feel the least hungry* → load up on *protein* at breakfast.

Both are good! The scientists basically proved: *Breakfast is the boss of your day.* Make it big, and whether you pick the "chewy veggie" version or the "eggy" version changes what wins — more weight gone, less hunger, or happier belly bugs.

Pretty cool, right? Breakfast isn't just food... it's like a remote control for your body!