wieviel stuhl für stuhlprobe — what symptoms are typical?

The question about stool sample quantity and typical symptoms cannot be answered from the provided context. The given information covers genetic markers (ACTN3, PPARA), a men's health blood test, and general DNA diet advice – not stool collection or gastrointestinal symptoms. For a stool sample (e.g., colorectal cancer screening or microbiome analysis), a small amount (about 1 g, pea-sized) is usually recommended, often from multiple bowel movements. Typical symptoms warranting a stool test include persistent diarrhea, blood in stool, unexplained weight loss, abdominal pain, or changes in bowel habits. These are general medical guidelines, not derived from the provided sources. For personal advice, consult a physician.