The European Working Group on Sarcopenia in Older People (EWGSOP) developed a clinical definition and consensus diagnostic criteria for age-related sarcopenia. Sarcopenia is characterized by progressive loss of skeletal muscle mass and strength, with a risk of adverse outcomes such as physical disability, poor quality of life, and death. Diagnosis requires both low muscle mass and low muscle function (strength or performance). The group proposed three stages: presarcopenia, sarcopenia, and severe sarcopenia. They reviewed various tools for measuring muscle mass, strength, and physical performance, and suggested an algorithm for sarcopenia case finding based on gait speed, grip strength, and muscle mass. The paper also presents suggested primary and secondary outcome domains for research. Sarcopenia is a geriatric syndrome that overlaps with other conditions such as cachexia, frailty, and sarcopenic obesity. The group emphasized the need for further research to define the natural course of sarcopenia and develop effective treatments. The paper also discusses the importance of nutrition, physical activity, and medication in the prevention and treatment of sarcopenia. The final document was endorsed by several European organizations, including the European Geriatric Medicine Society, the European Society for Clinical Nutrition and Metabolism, the International Association of Gerontology and Geriatrics—European Region, and the International Association of Nutrition and Aging. The paper highlights the need for standardized cut-off points and measurement tools to improve the identification and management of sarcopenia in older adults.The European Working Group on Sarcopenia in Older People (EWGSOP) developed a clinical definition and consensus diagnostic criteria for age-related sarcopenia. Sarcopenia is characterized by progressive loss of skeletal muscle mass and strength, with a risk of adverse outcomes such as physical disability, poor quality of life, and death. Diagnosis requires both low muscle mass and low muscle function (strength or performance). The group proposed three stages: presarcopenia, sarcopenia, and severe sarcopenia. They reviewed various tools for measuring muscle mass, strength, and physical performance, and suggested an algorithm for sarcopenia case finding based on gait speed, grip strength, and muscle mass. The paper also presents suggested primary and secondary outcome domains for research. Sarcopenia is a geriatric syndrome that overlaps with other conditions such as cachexia, frailty, and sarcopenic obesity. The group emphasized the need for further research to define the natural course of sarcopenia and develop effective treatments. The paper also discusses the importance of nutrition, physical activity, and medication in the prevention and treatment of sarcopenia. The final document was endorsed by several European organizations, including the European Geriatric Medicine Society, the European Society for Clinical Nutrition and Metabolism, the International Association of Gerontology and Geriatrics—European Region, and the International Association of Nutrition and Aging. The paper highlights the need for standardized cut-off points and measurement tools to improve the identification and management of sarcopenia in older adults.