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Mediterranean diet may help protect older adults from becoming frail

January 11, 2018

An analysis of published studies indicates that following the Mediterranean diet may reduce the risk of frailty in older individuals. The findings, which are published in the Journal of the American Geriatrics Society, suggest that a diet emphasizing primarily plant-based foods--such as fruits and vegetables, whole grains, legumes, and nuts--may help keep people healthy and independent as they age.

Frailty is common among older people and its prevalence is increasing as the population ages. Frail older adults may often feel low in energy and have weight loss and weak muscle strength. They are more likely to suffer from numerous health concerns, including falls, fractures, hospitalization, nursing home placement, disability, dementia, and premature death. Frailty is also associated with a lower quality of life.

Nutrition is thought to play a crucial role in developing frailty, a team led by Kate Walters, PhD and Gotaro Kojima, MD, of University College London, in the UK, looked to see if following a healthy diet might decrease one's risk of frailty.

The researchers analyzed evidence from all published studies examining associations between adherence to a Mediterranean diet and development of frailty in older individuals. Their analysis included 5789 people in four studies in France, Spain, Italy, and China.

"We found the evidence was very consistent that older people who follow a Mediterranean diet had a lower risk of becoming frail," said Dr. Walters. "People who followed a Mediterranean diet the most were overall less than half as likely to become frail over a nearly four-year period compared with those who followed it the least."

The investigators noted that the Mediterranean diet may help older individuals maintain muscle strength, activity, weight, and energy levels, according to their findings. "Our study supports the growing body of evidence on the potential health benefits of a Mediterranean diet, in our case for potentially helping older people to stay well as they age," said Dr. Kojima.

Although older people who followed a Mediterranean diet had a lower risk of becoming frail, it's unclear whether other characteristics of the people who followed this diet may have helped to protect them. "While the studies we included adjusted for many of the major factors that could be associated--for example, their age, gender, social class, smoking, alcohol, how much they exercised, and how many health conditions they had--there may be other factors that were not measured and we could not account for," said Dr. Walters. "We now need large studies that look at whether increasing how much you follow a Mediterranean diet will reduce your risk of becoming frail."
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Full Citation: "Adherence of Mediterranean diet reduces incident frailty risk: A systematic review and meta-analysis." Gotaro Kojima, Christina Avgerinou, Steve Iliffe, and Kate Walters. Journal of the American Geriatrics Society; Published Online: January 11, 2018 (DOI: 10.1111/jgs.15251).

URL Upon Publication: http://doi.wiley.com/10.1111/jgs.15251

Author Contact: Dr. Kate Walters, Department of Primary Care and Population Health, UCL, at k.walters@ucl.ac.uk. Rowan Walker, in UCL's media office, at rowan.walker@ucl.ac.uk or +44 (0)20 3108 8515.

About the Journal of the American Geriatrics Society (JAGS)

Included in more than 9,000 library collections around the world, JAGS is the go-to journal for clinical aging research. We provide a diverse, interprofessional community of healthcare professionals with the latest insights on geriatrics education, clinical practice, and public policy--all supporting the high-quality, person-centered care essential to our well-being as we age.

Our rigorous peer-review process ensures that we bring healthcare professionals, older adults, and caregivers research with the potential to impact public policy and geriatrics care today--and tomorrow. Since the publication of our first edition in 1953, JAGS has remained one of the oldest and most impactful journals dedicated exclusively to gerontology and geriatrics. For more information, please visit http://wileyonlinelibrary.com/journal/jgs.

About Wiley

Wiley, a global research and learning company, helps people and organizations develop the skills and knowledge they need to succeed. Our online scientific, technical, medical, and scholarly journals, combined with our digital learning, assessment and certification solutions help universities, learned societies, businesses, governments and individuals increase the academic and professional impact of their work. For more than 210 years, we have delivered consistent performance to our stakeholders. The company's website can be accessed at http://www.wiley.com.

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