Karolinska Institutet Mar 19 2026 Older people with a genetic risk of Alzheimer's disease did not experience the expected increase in cognitive decline and dementia risk if they consumed relatively large amounts of meat. This is shown in a new study from Karolinska Institutet published in JAMA Network Open . The results may contribute to the development of more individually tailored dietary advice. APOE is a gene that affects the risk of Alzheimer's disease. In Sweden, approximately 30 per cent