How weight changes affect older adults' lifespan
Effect of Body Weight, Waist Circumference and Their Changes on Mortality: A 10-Year Population-Based Study
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Study looked at how body weight and waist size changes impact death risk in older people.
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 546 / 72
Evidence Score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Study looked at how body weight and waist size changes impact death risk in older people.
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 546 / 72
Evidence Score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
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Claims (6)
Increased waist circumference is associated with a higher risk of metabolic disease and mortality, independent of total body weight.
Older adults who lose more than 5% of their body weight are more likely to die within the study period compared to those whose weight stays stable.
Older adults who lose more than 5% of their waist size are more likely to die within the study period compared to those whose waist size stays stable.
For older adults, both very small and very large changes in waist size are linked to higher death rates, forming a U-shaped pattern.
Being underweight, overweight, or obese at the start of the study didn't significantly change the risk of death compared to having a normal weight in older adults.