Gut health has become a major wellness focus, but not all popular trends deliver on their promises. Dr Megan Rossi, a respected gut health expert, highlights the approach proven to support your microbiome, plus tips on fermented foods and probiotics — as well as what to avoid.
- Aim to eat 30+ different plant foods weekly for a diverse microbiome
- Introduce fermented foods gradually alongside a fibre-rich diet
- Choose probiotic strains based on specific health needs, not one-size-fits-all
What happened
Gut health has surged into the mainstream with an explosion of products and advice focused on improving the microbiome — the trillions of microbes in our digestive systems that influence digestion, immunity, and even mental wellbeing. Dr Megan Rossi, a dietitian and gut health expert at King’s College London, recently shared insights on which trends hold scientific backing and which fall short.
Her clear message: increasing the variety of plant foods in your diet is a simple, evidence-based way to enhance gut microbial diversity. Additionally, fermented foods can offer benefits but need to be introduced thoughtfully. Probiotics require a nuanced approach, as different strains affect the body in varying ways. Meanwhile, some popular gut trends are overhyped or unsupported by research.
Why it feels good
Eating a diverse mix of plants — spanning fruits, vegetables, wholegrains, legumes, nuts, seeds, herbs, and spices — feeds a wider variety of gut microbes linked to better health outcomes. Research shows that consuming over 30 different plant foods weekly correlates with a richer microbial ecosystem, which supports digestion and immune function.
Fermented foods such as kefir, kimchi, and live yogurt deliver live organisms and compounds that may reduce inflammation and boost microbe variety. When consumed gradually and alongside a fibre-filled diet, these foods can enhance gut comfort and wellbeing without unpleasant side effects. Choosing probiotics tailored to your needs can also support immunity and specific digestive issues, making gut care a more targeted and rewarding experience.
What to enjoy or watch next
Focus on adding more plant diversity to your meals without stressing about perfection. Try incorporating a variety of beans, lentils, spices, and whole grains to keep your gut flora thriving. When it comes to fermented foods, start with small portions to let your system adjust and accompany them with fibre-rich choices for best results.
Be cautious about trendy gut supplements or methods without solid scientific evidence. If considering probiotics, look for specific strains validated for your health goals rather than generic products. Staying informed through trusted experts like Dr Rossi can help you make gut-friendly choices that truly benefit your body and feel good day to day.