wie wird eiweiß verdaut — can a DNA test help?

Protein digestion begins in the stomach with pepsin and continues in the small intestine with pancreatic enzymes like trypsin and chymotrypsin. A DNA test can theoretically detect variants in genes encoding these enzymes or their regulators (e.g., PRSS1, CTRC). However, such variants are rare and typically have small effects. Most people digest protein efficiently regardless of their genetics. Therefore, a DNA test does not provide clinically relevant information about individual protein digestion. The evidence is mostly mechanistic; robust human studies showing practical benefits are lacking. If you have no symptoms like bloating or diarrhea after high-protein meals, a DNA test is unnecessary. For existing digestive issues, medical evaluation is recommended rather than genetic testing. In summary, DNA tests for protein digestion are currently more marketing than evidence-based medicine.