Questions people ask about IgG Unverträglichkeit Check

Being labeled a slow caffeine metabolizer typically refers to a variant in the CYP1A2 gene (rs762551). The evidence is mixed: some observational studies (e.g., JAMA Netw Open 2023) suggest increased cardiovascular risk with very high intake, while others (e.g., Costa Rica MI Study 2006) find no clear link. Moderate consumption (1–2 cups per day) is likely safe. A single genetic marker alone should not dictate your habits – your personal well-being and medical advice matter more. You don't have to give up your beloved morning coffee, but stay mindful of your overall health and consult a doctor if concerned.