What to watch with Leaky Gut Test and Abnehmen?

When considering a Leaky Gut Test alongside weight loss (Abnehmen), caution is warranted. Many commercial tests measure IgG antibodies to foods, which major allergy societies (EAACI, AAAAI, DGAKI) deem invalid—they reflect exposure, not intolerance. The 'leaky gut' concept itself remains scientifically debated; a positive result does not necessarily indicate a treatable condition. For weight management, no single genetic or biomarker test provides a shortcut. Factors like total calorie intake, macronutrient balance, physical activity, and sleep dominate. Even if a variant like FUT2 impairs B12 absorption (potentially contributing to fatigue), it is not a direct driver of weight gain. Avoid unnecessary dietary restrictions based on IgG results—they can lead to nutrient deficiencies. Instead, consult a physician for evidence-based diagnostics (e.g., lactulose-mannitol test under controlled settings) and personalized nutrition counseling.