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Marie Claire
Marie Claire
Lifestyle
Anna Bartter

Is the 30-30-3 Method the Simplest Way to Turbocharge Your Gut Health? A Top Dietitian Explains

30-30-30 eating method: A woman following a healthy recipe on her phone in the kitchen.

We're almost at the end of 2025, but the gut health trend is showing no signs of dissipating. We all know so much more about our digestive function than we did only a few years ago, and most of us are hooked on at least one probiotic - whether it's a gummy, a greens powder or a kefir shot.

And with good reason, too: we know that gut function is integral to overall health and wellbeing - a link that is well established, research-wise. Studies (such as this one, published in the journal Nutrients) consistently confirm the importance of a healthy gut in preventing disease, with others (like this one, from the same journal) confirming the role of the gut in mental health, too (via the gut-brain axis).

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