How often should I retest my gut health?
We recommend waiting at least 4 months after your last test to give your gut microbiome enough time to adapt to your dietary changes.
Real data from our original METHOD study shows that following ZOE's personalized advice leads to real progress: when we retested 476 members, 77% saw an increase in their gut microbiome score.
While this research was conducted using our original test kit, our core philosophy on how we deliver personalised advice through food and meal scores has remained the same.
Why you might want to wait longer before retesting:
Your Microbes Resist Rapid Change: Gut microbes naturally prefer to stay within a stable baseline range - an evolutionary reflex designed to protect us during periods of feast or famine. If dietary changes are stopped, microbes tend to revert to their old baseline within a few days.
Consistency Over Time is Key: Some gut bacteria react quickly to diet, while others are much more resistant to change. Building a truly transformed ecosystem requires long-term, sustained habits rather than quick fixes.
Lifestyle Factors Matter: Your gut microbiome responds not just to food, but also to your stress levels, sleep quality, exercise, and environment. It's important to consider all these factors before completing a retest to give you the best chance of seeing meaningful shifts on your next Microbiome result.