How quickly food moves through your digestive system may play a bigger role in your health than previously thought. Emerging research suggests that gut transit time, or how long it takes for waste to pass through the body, is closely tied to the composition of the gut microbiome. Differences in this timing can influence the types of bacteria that thrive in the gut, which in turn may affect overall health.
Researchers found that both very fast and very slow transit times are linked to less diverse gut bacteria, a factor often associated with poorer health outcomes. Slower movement through the gut has been connected to metabolic issues, inflammation, and even neurological conditions, while faster transit may also create imbalances in microbial populations. These variations may help explain why the same diet or supplement can produce different results in different people.
The findings suggest that understanding individual digestive patterns could become an important tool for personalizing health strategies. Rather than focusing solely on diet, researchers say tracking how the body processes food may offer deeper insights into disease risk and treatment response. Recognizing this internal rhythm could help guide more targeted approaches to gut health and overall wellness
SOURCE:
ScienceAlert, April 20, 2026