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[A prospective study on the association between underweight and mortality from all cause]
1Department of Cardiology, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China.
Zhonghua Yi Xue Za Zhi
|January 5, 2002
Summary
Underweight individuals face increased all-cause mortality risk. This association persists even after accounting for smoking and early cancer deaths, highlighting a significant public health concern.
Area of Science:
- Epidemiology
- Public Health
- Cardiovascular Risk Factors
Context:
- Investigating the link between body mass index (BMI) and mortality is crucial for public health.
- Previous studies have shown varying associations between BMI categories and mortality outcomes.
- Understanding the specific risks associated with underweight is essential for targeted interventions.
Purpose:
- To examine the relationship between underweight (BMI < 18.5 kg/m2) and all-cause mortality.
- To quantify the relative risk (RR) of mortality associated with underweight using a Cox proportional hazard model.
- To determine if the association between underweight and mortality is influenced by smoking or early cancer deaths.
Summary:
- A cohort study analyzed cardiovascular risk factors, tracking 307 deaths over an average of 12.40 years.
- Underweight individuals (BMI < 18.5 kg/m2) exhibited a 58% increased relative risk of all-cause mortality compared to normal weight individuals (BMI 18.5-24.9 kg/m2).
- This increased mortality risk remained significant even after excluding early deaths from cancer, suggesting factors beyond cancer and smoking contribute.
Impact:
- The findings indicate that underweight is an independent risk factor for increased all-cause mortality.
- This research underscores the importance of considering underweight as a significant health risk in clinical practice and public health policy.
- Further research is warranted to elucidate the mechanisms underlying the increased mortality in underweight populations.