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Are all calories created equal? Your gut microbes don’t think so. (www.washingtonpost.com)

submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]

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For years scientists have believed that when it comes to weight gain, all calories are created equal.

But an intriguing new study, published in the journal Nature Communications, suggests that’s not true. The body appears to react differently to calories ingested from high-fiber whole foods vs. ultra-processed junk foods.

The reason? Cheap processed foods are more quickly absorbed in your upper gastrointestinal tract, which means more calories for your body and fewer for your gut microbiome, which is located near the end of your digestive tract. But when we eat high-fiber foods, they aren’t absorbed as easily, so they make the full journey down your digestive tract to your large intestine, where the trillions of bacteria that make up your gut microbiome are waiting.

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[–] [email protected] 3 points 1 year ago (2 children)

This is interesting to me, because my intuition would be that it doesn't matter whether the calories are going into microbiota or fat, it's still going to end up as weight in your body (gut bacteria still add mass).

Also adding to what another person said, the difference here is high fiber vs. low fiber. And I think the discussion around nutrition in general is moving away from weight being a primary determinant of health but a symptom of health. I.E. we shouldn't be seeking to lose weight but to eat healthily, high fiber, whole foods, less processed junk, exercise frequently, and weight is a trailing measure of our success in that.

[–] [email protected] 5 points 1 year ago

This is interesting to me, because my intuition would be that it doesn’t matter whether the calories are going into microbiota or fat, it’s still going to end up as weight in your body (gut bacteria still add mass).

They mentioned in the article that with high fiber diets there's more calories in the waste/scat. So you're absorbing less into fat or the gut.

[–] [email protected] 1 points 1 year ago

This is exactly how I've been teaching myself to approach eating in the past year. I've been over the weight I'd like to be for a long time, and had failed repeatedly at improving my weight or my health with lower calorie count, but ultimately nutritionally lacking food.

Amazingly I've found that changing my primary goal to getting a certain amount of fiber each day and generally trying to eat nutritionally complete meals, I've felt better and even been losing weight more consistently. I say this with the caveat that I am soft-counting calories, but I have not been worrying about keeping track of it too much, nor have I needed to.

It feels obvious but it's amazing how effective simply targeting healthy foods and activities (rather than focusing on forbidding foods and activities) can work out.