{"id":20144,"date":"2025-08-31T14:07:42","date_gmt":"2025-08-31T12:07:42","guid":{"rendered":"https:\/\/thesmartcityjournal.cibeles.net\/sin-categoria\/mediterranean-diet-offsets-genetic-risk-for-dementia-study-finds\/"},"modified":"2025-08-31T14:10:06","modified_gmt":"2025-08-31T12:10:06","slug":"mediterranean-diet-offsets-genetic-risk-for-dementia-study-finds","status":"publish","type":"post","link":"https:\/\/www.thesmartcityjournal.com\/en\/investigation\/mediterranean-diet-offsets-genetic-risk-for-dementia-study-finds","title":{"rendered":"Mediterranean diet offsets genetic risk for dementia, study finds"},"content":{"rendered":"<p><i><span style=\"font-weight: 400\">Greatest benefit for those with highest predisposition to Alzheimer\u2019s disease<\/span><\/i><\/p>\n<p><span style=\"font-weight: 400\">New research suggests that following a Mediterranean-style diet may help offset a person\u2019s genetic risk for developing Alzheimer\u2019s disease.<\/span><\/p>\n<p><span style=\"font-weight: 400\">The study, published in Nature Medicine and led by investigators from Mass General Brigham, Harvard T.H. Chan School of Public Health, and the Broad Institute of MIT and Harvard, found that people at the highest genetic risk for Alzheimer\u2019s disease who followed a Mediterranean diet \u2014 rich in vegetables, fruits, nuts, whole grains, and low in red and processed meats \u2014 showed slower cognitive decline as well as a greater reduction in dementia risk than those at lower genetic risk.<\/span><\/p>\n<p><span style=\"font-weight: 400\">\u201cOne reason we wanted to study the Mediterranean diet is because it is the only dietary pattern that has been causally linked to cognitive benefits in a randomized trial,\u201d said study first author Yuxi Liu, a research fellow in the Department of Medicine at Brigham and Women\u2019s Hospital and a postdoctoral fellow at the Harvard Chan School and the Broad. \u201cWe wanted to see whether this benefit might be different in people with varying genetic backgrounds, and to examine the role of blood metabolites, the small molecules that reflect how the body processes food and carries out normal functions.\u201d<\/span><\/p>\n<p><span style=\"font-weight: 400\">Over the last few decades, researchers have learned more about the genetic and metabolic basis of Alzheimer\u2019s disease and related dementias. These are among the most common causes of cognitive decline in older adults. Alzheimer\u2019s disease is known to have a strong genetic component, with heritability estimated at up to 80 percent.<\/span><\/p>\n<p><span style=\"font-weight: 400\">One gene in particular, apolipoprotein E, or APOE, has emerged as the strongest genetic risk factor for sporadic Alzheimer\u2019s disease \u2014 the more common type develops later in life and is not directly inherited in a predictable pattern. People who carry one copy of the APOE4 variant have a three- to fourfold higher risk of developing Alzheimer\u2019s. People with two copies of the APOE4 variant have a 12-fold higher risk of Alzheimer\u2019s than those without.<\/span><\/p>\n<p><span style=\"font-weight: 400\">To explore how the Mediterranean diet may reduce dementia risk and influence blood metabolites linked to cognitive health, the team analyzed data from 4,215 women in the Nurses\u2019 Health Study, following participants from 1989 to 2023 (average age 57 at baseline). To validate their findings, the researchers analyzed similar data from 1,490 men in the Health Professionals Follow-Up Study, followed from 1993 to 2023.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Researchers evaluated long-term dietary patterns using food frequency questionnaires and examined participants\u2019 blood samples for a broad range of metabolites. Genetic data were used to assess each participant\u2019s inherited risk for Alzheimer\u2019s disease. Participants were then followed over time for new cases of dementia. A subset of 1,037 women underwent regular telephone-based cognitive testing.<\/span><\/p>\n<p><span style=\"font-weight: 400\">They found that the people following a more Mediterranean-style diet had a lower risk of developing dementia and showed slower cognitive decline. The protective effect of the diet was strongest in the high-risk group with two copies of the APOE4 gene variant, suggesting that diet may help offset genetic risk.<\/span><\/p>\n<p><span style=\"font-weight: 400\">\u201cThese findings suggest that dietary strategies, specifically the Mediterranean diet, could help reduce the risk of cognitive decline and stave off dementia by broadly influencing key metabolic pathways,\u201d Liu said. \u201cThis recommendation applies broadly, but it may be even more important for individuals at a higher genetic risk, such as those carrying two copies of the APOE4 genetic variant.\u201d<\/span><\/p>\n<p><span style=\"font-weight: 400\">A study limitation was that the cohort consisted of well-educated individuals of European ancestry. More research is needed in diverse populations.<\/span><\/p>\n<p><span style=\"font-weight: 400\">In addition, although the study reveals important associations, genetics and metabolomics are not yet part of most clinical risk prediction models for Alzheimer\u2019s disease. People often don\u2019t know their APOE genetics. More work is needed to translate these findings into routine medical practice.<\/span><\/p>\n<p><span style=\"font-weight: 400\">\u201cIn future research, we hope to explore whether targeting specific metabolites through diet or other interventions could provide a more personalized approach to reducing dementia risk,\u201d Liu said.<\/span><\/p>\n<p><b>Text: Mass General Brigham Communications<\/b><\/p>\n<p><span style=\"font-weight: 400\">This study was funded in part by the National Institutes of Health.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Greatest benefit for those with highest predisposition to Alzheimer\u2019s disease New research suggests that following a Mediterranean-style diet may help offset a person\u2019s genetic risk for developing Alzheimer\u2019s disease. The study, published in Nature Medicine and led by investigators from Mass General Brigham, Harvard T.H. Chan School of Public Health, and the Broad Institute of\u2026<\/p>\n","protected":false},"author":2,"featured_media":20143,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_scj_primary_category_id":98,"_scj_featured":false,"_scj_featured_from":"","_scj_featured_until":"","_scj_featured_order":0,"_scj_visibility_class":"current","_scj_layout_family":"standard","_scj_article_style":"","_scj_display_overrides":[],"_scj_intro_image_id":20143,"_scj_intro_alt":"Mediterranean diet offsets genetic risk for dementia, study finds","_scj_intro_caption":"","_scj_intro_class":"","_scj_intro_float":"","_scj_full_image_id":20143,"_scj_full_alt":"Mediterranean diet offsets genetic risk for dementia, study finds","_scj_full_caption":"","_scj_full_class":"","_scj_full_float":"","_scj_media_type":"","_scj_media_provider":"","_scj_media_external_id":"","_scj_media_url":"","_scj_media_poster_id":0,"_scj_media_width":0,"_scj_media_height":0,"_scj_media_aspect_ratio":"","_scj_media_description":"","_scj_gallery_items":[],"_scj_related_post_ids":[],"_scj_additional_authors":[],"scj_layout_family":"standard","scj_media_provider":"","scj_media_url":"","scj_full_caption":"","footnotes":""},"categories":[98],"tags":[2629,2110,291,2752,289],"class_list":["post-20144","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research","tag-ageing-population","tag-brain-health","tag-genetics","tag-mediterranean-diet","tag-neuroscience"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Mediterranean diet offsets genetic risk for dementia, study finds - thesmartcityjournal.com<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.thesmartcityjournal.com\/en\/investigation\/mediterranean-diet-offsets-genetic-risk-for-dementia-study-finds\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Mediterranean diet offsets genetic risk for dementia, study finds - thesmartcityjournal.com\" \/>\n<meta property=\"og:description\" content=\"Greatest benefit for those with highest predisposition to Alzheimer\u2019s disease New research suggests that following a Mediterranean-style diet may help offset a person\u2019s genetic risk for developing Alzheimer\u2019s disease. 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