There’s no escaping protein mania as of late. Each vitamin influencer value their stripes is crowing concerning the well being advantages of cottage cheese and beans. As of late, even the dairy {industry} is pushed not by cheese gross sales, however whey gross sales1. In response to NielsenIQ, gross sales of merchandise labeled as protein-rich grew a powerful 4.8% in quantity between March 2024 and March 20252.
However whereas there are actually advantages to bulking up your plate, there may be penalties. In response to a brand new examine in Science of Meals, this obsession with protein could also be a detriment to the range of your intestine microbiome3. Within the new examine, researchers discovered that mice consuming a high-protein eating regimen considerably modified their intestine microbiota in simply eight weeks, with the beta-diversity of intestine microbiota lowering “considerably.”
This stems not simply from elevated protein consumption, but in addition from what tends to fall by the wayside: fiber. Most high-protein or high-fat diets like keto unfairly demonize carbohydrates, which may have an effect on your physique in surprising methods. Carbs aren’t simply a necessary vitality supply, they’re additionally a few of the greatest sources of gut-healthy fiber. And since practically all Individuals are poor on this important nutrient, it’s contributing to a bunch of latest well being woes4.
It’s Time to Cease Demonizing Carbs — Your Intestine Wants Them
People championing protein or fats on the expense of carbohydrates could not see the damaging repercussions of their dietary decisions at first, consultants notice.
“I see this typically in follow,” says Kathleen Benson, CSSD, CPT, RDN at VNutrition. Repeatedly, she shares, purchasers have adopted Instagram knowledge to up protein and reduce carbs, reporting that their intestine troubles have pale virtually instantly.
“However that short-term aid isn’t as a result of carbs are ‘dangerous,’ she cautions. “It’s as a result of they’ve stopped feeding the components of the microbiome which may be out of steadiness.”
She cites one notably widespread instance: those that consider themselves to be gluten illiberal however haven’t any drawback with sourdough bread, which is pre-fermented and thus simpler to digest.
“When somebody reacts to many wheat merchandise however can eat sourdough with out signs, it’s a robust clue that the difficulty isn’t gluten however the fermentable carbohydrates within the grain,” she says. “This type of detective work will help individuals perceive what their intestine truly struggles with as an alternative of labeling it as a gluten intolerance.”
The Advantages of a Excessive-Fiber Weight loss program
This understanding is crucial if you wish to preserve your intestine microbiome wholesome and numerous. Researchers discovered that mice fed a high-fiber eating regimen noticed improved intestine microbial range and promoted higher pathways of tryptophan, galactose, fructose, and mannose metabolism, every of that are related to totally different intestine microbiota. On the flip facet, lowering every day fiber consumption can have main damaging well being repercussions.
“We additionally know that fiber consumption is among the most protecting elements for digestive well being and colon most cancers danger,” says Benson. “Low fiber consumption doesn’t essentially trigger colon most cancers, however it’s a recognized danger issue. When somebody will increase protein however doesn’t preserve or enhance fiber, the microbiome can shift in ways in which work towards long-term intestine well being.”
A Balanced Strategy to Protein Consumption
All this isn’t to say that protein isn’t essential — removed from it. Females specifically can profit from elevated protein consumption, in line with Dr. Serena Goldstein, who notes that upping protein will help encourage hormone steadiness.
“For post-menopausal girls, extra protein may be nice too for blood sugar points and bone well being, to call just a few,” she explains.
However in line with Benson, most Individuals don’t truly have to focus fairly so deliberately on upping their protein consumption. “Some individuals could profit from including extra protein, particularly high-quality lean sources, however most Individuals meet their baseline protein wants,” she says.
Methods to Enhance the High quality of Our Protein Consumption
Even if we could already be assembly baseline protein wants, {our relationships} with protein are nowhere close to excellent. For Benson, most of us would do nicely to focus not on how a lot we’re having, however after we’re having it.
“Many don’t distribute protein nicely throughout the day,” she says. “Breakfast tends to be very low in protein, whereas dinner may be disproportionately excessive.”
And for Goldstein, the standard of our protein sources is paramount. “I’d focus extra on the supply and high quality of protein consumption,” she says. She notes that sure protein sources like beans and legumes do supply some fiber, which makes it simpler to assist a balanced eating regimen.
“Many individuals would see simply as a lot profit by bettering fiber consumption whereas nonetheless assembly their protein wants,” provides Benson. “Weight loss program tradition tends to hyperfocus on a single nutrient, however general steadiness is what drives well being outcomes.” In different phrases, regardless of the title of this very article, there’s no have to make the dialogue focus on fiber vs. protein — the reply will all the time be each.
Methods to Look after Your Intestine Microbiome
If you wish to make sure you’re not sidelining your intestine in your pursuit of positive aspects, it’s not that arduous to up your fiber consumption with only a handful of intentional modifications.
“One of the vital efficient beginning factors is just growing plant selection,” suggests Benson. “This could embrace fruits, greens, entire grains, nuts, seeds, herbs, and legumes. Every plant provides a barely totally different kind of fiber or carbohydrates, and that range is what helps assist a extra resilient microbiome over time. Even including simply two to a few new plant meals per week could make a notable distinction.”
Goldstein agrees, noting that boosting fiber consumption — and intestine well being on the entire — is commonly a easy query of including just a few additional servings of high-fiber meals like leafy inexperienced greens to your day, growing water consumption, spending time outdoors, and taking the time for conscious breath workouts.
In fact, it’s not nearly maximizing meals excessive in fiber or protein. Above all, consultants advocate paying shut consideration to your personal physique. “That is very particular person,” says Benson. “Two individuals can eat the identical quantity of protein and fiber and have very totally different responses.”
Sources:
- https://www.nytimes.com/2025/07/16/enterprise/whey-protein-dairy-industry.html
- https://www.bbc.com/information/articles/c20zk35ypxno
- https://www.nature.com/articles/s41538-025-00575-9#Sec2
- https://www.coronary heart.org/en/information/2022/01/27/sound-the-fiber-alarm-most-of-us-need-more-of-it-in-our-diet
