Before trying to “increase absorption,” identify what is impairing it. Malabsorption can be linked to celiac disease, inflammatory bowel disease, pancreatic enzyme insufficiency, bile-flow problems, chronic infections, or certain medications. Red flags include unexplained weight loss, prolonged diarrhea, greasy/shiny stools, nutrient deficiencies (iron, B12, vitamin D), fatigue, and skin/hair changes. In this scenario, supplements alone are not a fix—medical assessment and targeted tests (blood work, stool studies, sometimes endoscopy) may be needed. Supportive measures include reducing irritants (heavy alcohol, highly processed/high-fat load), ensuring adequate protein, tailoring fiber to symptoms (soluble fiber can help in diarrhea), and correcting deficiencies such as vitamin D or zinc when present. Probiotic/postbiotic strategies may help symptom control in some cases, but “improves absorption” is not a universal promise—it depends on the underlying condition. Bottom line: confirm the cause first, then build a personalized treatment and nutrition plan.