Effectiveness of omega-3 fatty acid supplementation in patients with Alzheimer disease: a systematic review and meta-analysis

Abstract

ntroduction: Alzheimer disease (AD) is a neurodegenerative disease characterised by progressive dementia associated with global cognitive dysfunction. Methods: We conducted a systematic review and meta-analysis of clinical trials evaluating omega-3 supplementation in patients with AD. Objective: To determine if there is scientific evidence of the effectiveness of omega-3 supplementation in improving cognitive function in patients with AD. Search strategy: We included only randomised controlled trials (RCTs) from the following databases: Medline, Cochrane Central, Cinahl, and LILACS. An electronic search was also conducted using Google Scholar. Study selection: Six articles met the eligibility criteria. The risk of bias was assessed following the Cochrane method. Conclusion: There is no consistent evidence to support the effectiveness of omega-3 supplementation in improving cognitive function in AD patients in the short and medium term.