Evidence check: MY FOODBOOK in the context of gut health

The evidence for 'MY FOODBOOK' in the context of gut health is weak. The product appears to combine DNA and IgG testing. Based on available information, DNA nutrition tests (such as MyBody-X's) rely on single SNPs with small effect sizes that are often overhyped. IgG food sensitivity tests are not clinically validated – IgG antibodies reflect normal food exposure, not true intolerance. False positives can lead to unnecessary dietary restrictions. Gut health is influenced by many factors (microbiome, fiber, inflammation) that these tests cannot reliably assess. A sound approach would be professional dietary counseling focusing on whole foods and, if needed, validated stool analyses. The evidence for MY FOODBOOK is therefore classified as 'marketing'.