Antiaging, longevity and calorie restrictionMorley, John Ea,b; Chahla, Eliea; AlKaade, SaadaCurrent Opinion in Clinical Nutrition & Metabolic Care: January 2010 - Volume 13 - Issue 1 - p 40–45 doi: 10.1097/MCO.0b013e3283331384 Ageing: biology and nutrition: Edited by Ronni Chernoff and Tommy Cederholm Abstract Author Information Purpose of review The role of calorie restriction in humans is controversial. Recently, new data in monkeys and humans have provided new insights into the potential role of calorie restriction in longevity. Recent findings A study in rhesus monkeys showed a reduction in aging-associated mortality. A number of controlled studies have suggested a variety of beneficial effects during studies of 6–12 months in humans. Major negative effects in humans were loss of muscle mass, muscle strength and loss of bone. Summary Dietary restriction in rodents has not been shown to be effective when started in older rodents. Weight loss in humans over 60 years of age is associated with increased mortality, hip fracture and increased institutionalization. Calorie restriction in older persons should be considered experimental and potentially dangerous. Exercise at present appears to be a preferable treatment for older persons. aGRECC, VA Medical Center, USA bDivision of Geriatric Medicine, Saint Louis University School of Medicine, St. Louis, Missouri, USA Correspondence to John E. Morley, MB, BCh, Division of Geriatric Medicine, Saint Louis University School of Medicine, 1402 S. Grand Blvd., M238, St. Louis, MO 63104, USA Tel: +1 314 977 8464; e-mail: email@example.com © 2010 Lippincott Williams & Wilkins, Inc.