Is Fitness | LifestyleCheck useful for gut health?

The Fitness | LifestyleCheck analyzes SNPs such as rs4988235 (lactose intolerance) and others related to metabolism and inflammation. For gut health, its usefulness is limited. Evidence is mixed: rs4988235 provides moderate prediction for lactose intolerance (human-moderate), but most other SNPs lack direct clinical validation for gut health. Effect sizes are small, and gut health is heavily influenced by diet, microbiome, and lifestyle – factors not captured by DNA tests. The test can serve as supplementary insight but should not replace medical advice or a breath test for lactose intolerance. Caveat: results are often overhyped (marketing). For a comprehensive gut health assessment, stool microbiome analysis and dietary tracking are more appropriate.