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Effect of Breakfast Skipping and Late Night Eating on BMI with Type 2 Diabetes

ncbi.nlm.nih.gov

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Re: Effect of Breakfast Skipping and Late Night Eating on BMI with Type 2 Diabetes

#13

Post by runeks »

sheep-a wrote: post #3

This seems similar to intermittent fasting but with seemingly the opposite effect, I wonder what I'm missing.

You’re missing the fact that this study measures only correlation and nothing else, thus making it close to useless. The sample size is also tiny.

Re: Effect of Breakfast Skipping and Late Night Eating on BMI with Type 2 Diabetes

#14

Post by mechhacker »

howeyc wrote: post #12

They interviewed 310 ppl, calculated their BMI, then found out around half skip breakfast. That half had BMI a little higher than the rest. No discussion of what they eat. What a waste of time for everyone involved.

And BMI says nothing of body fat percentage

Can have higher BMI and lower bodyfat

I'm not convinced BMI is a useful metric

Re: Effect of Breakfast Skipping and Late Night Eating on BMI with Type 2 Diabetes

#15

Post by makeitdouble »

The_Colonel wrote: post #8
tedchs wrote: post #4

IMHO, anything to do with Body Mass Index (BMI) is fake science. Ironically, this writeup is also from nih.gov: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2930234/

BMI is often inadequate to evaluate an individual, but it has proven effective for measuring across larger sample size, since its coarseness will swing both ways and more or less cancel out.

How do you measure effectiveness ? I am under the impression we have very few (any?) large scale intervention that have an objective positive effect, I'd be glad to know more.

Re: Effect of Breakfast Skipping and Late Night Eating on BMI with Type 2 Diabetes

#16

Post by light_hue_1 »

Readers and especially reviewers need to looking at effect sizes. Not just "was the p value under 0.05 so there is some effect". What a nothingburger.

Let's break it down.

> Breakfast skipping was correlated with BMI (Wald, 5.481, 95% CI, 0.154-0.847, P-value, 0.019).

What that means is that breakfast skipping was correlated with somewhere between no BMI points and 1. We have no way of knowing which from this study. Basically, maybe your BMI goes up a little, but so little as to be irrelevant.

> A positive direct correlation was evident between late dinner intake, BMI, and HbA1c (Wald, 4.210, 95% CI, 0.743-0.993, P-value, 0.04 for HbA1c, and Wald, 6.777, 95% CI, 1.0221-1.165, P-value, 0.009 for BMI).

Maybe eating dinner late increases your BMI by 1 point or so. This is probably the same point they claim you gain from eating breakfast late. The A1c numbers are so close to being statistically insignificant that we can just ignore them.

And that's before you add all of the other problems with the study.

This study shows nothing. Yet another questionnaire based study about nutrition. I wish we could as a scientific community just ban this garbage.

Re: Effect of Breakfast Skipping and Late Night Eating on BMI with Type 2 Diabetes

#17

Post by flavius29663 »

tedchs wrote: post #4

IMHO, anything to do with Body Mass Index (BMI) is fake science. Ironically, this writeup is also from nih.gov: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2930234/

While for individual cases clinicians shouldn't rely on BMI much, and only use it for screening, in studies it makes sense to use it because it's a useful tool. A person with a BMI of 30 is almost always fatter than a person with a BMI of 20. The outliers (like athletes with big bones) wouldn't change the statistical analysis.

It's in the same boat with IQ, it's a useful tool if you accept it has limited uses.

Re: Effect of Breakfast Skipping and Late Night Eating on BMI with Type 2 Diabetes

#18

Post by beezle »

The_Colonel wrote: post #8
tedchs wrote: post #4

IMHO, anything to do with Body Mass Index (BMI) is fake science. Ironically, this writeup is also from nih.gov: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2930234/

BMI is often inadequate to evaluate an individual, but it has proven effective for measuring across larger sample size, since its coarseness will swing both ways and more or less cancel out.

Spot on. And let's be honest even at the individual level - you know whether your BMI is "high" because you are a muscular jock or just an average joe that (over)eats the wrong things and is a couch potato (same probably applies to the ultra-lean runner types on the low side).
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