["Body composition and obesity-related lifestyle factors are associated with increased risk for Alzheimer's disease (AD). Amyloid beta (Abeta) is a peptide integral in the pathogenesis of AD. Abeta has been shown to be related to body fat and exercise in younger adults; however, no study to date has examined the possible relationship among Abeta, body composition and fitness indices in older adults.", 'Thirty-five older adults without significant neurological or psychiatric history, underwent fasting blood draw and completed cognitive testing and body composition and physical fitness assessments.', 'Partial correlations showed Abeta levels were inversely related to cognitive function, body fat and physical fitness measures.'] Is abeta40 associated with cognitive function , body fat and physical fitness in healthy older adults?