The human gut microbiome plays a vital role in overall health, influencing digestion, immunity, and metabolism. A new study published in Nature Medicine indicates that the rising consumption of ultra-processed foods, such as packaged snacks and sugary drinks, can lead to a 30% reduction in gut microbiome diversity. This reduction is associated with inflammation and metabolic disorders. Dr. Ramesh Garg, Senior Director of Gastroenterology at Fortis Hospital in Shalimar Bagh, highlights that traditional Indian diets, which include whole grains, legumes, and fermented foods, are rich in prebiotic fiber and probiotics that support gut health. The study also emphasizes that no single diet suits everyone, as individual gut microbiomes vary significantly due to genetics and lifestyle. This underscores the need for personalized nutrition rather than one-size-fits-all diet plans. Additionally, fad diets promising quick results may further harm gut health by reducing microbial diversity. Experts advocate for sustainable and minimally processed diets to maintain gut health, as consistency is key.