Can DNA Stoffwechseltest help with longevity?

DNA metabolism tests can offer insights into genetic variants that influence nutrient processing (e.g., FADS1 for omega-3 conversion, MTHFR for folate metabolism). However, the evidence linking these variants directly to longevity is weak. Most associations come from GWAS or observational studies with small effect sizes. Longevity is a complex trait shaped by diet, exercise, stress, sleep, and environment—factors that a single DNA test cannot capture. Moreover, many commercial tests lack robust clinical validation. Be cautious of overblown claims: genetics accounts for only a modest fraction of lifespan variation. A more reliable approach is to focus on evidence-based lifestyle interventions, regardless of genotype.