The Happiness Factor: How Subjective Well-Being Influences Longevity in China's Older Population
As the world grapples with an aging population, China offers a unique lens to study the impact of emotional well-being on longevity. Subjective Well-Being (SWB) is a measure that includes life satisfaction, positive emotions like happiness and optimism, and negative feelings such as anxiety and loneliness. Researchers found that higher levels of SWB were linked to a reduced risk of dying from any cause. This was true even after accounting for various factors like age, lifestyle, and existing health conditions.
Interestingly, out of the eight aspects of SWB studied, only happiness and feelings of usefulness had a significant impact on mortality. This suggests that not all emotional states are created equal when it comes to living a longer life. The findings were consistent across different groups, indicating that boosting emotional well-being could be a universal strategy for healthier aging.
So, what's the takeaway? Emotional well-being isn't just a state of mind; it's a vital component of health that can significantly influence how long you live. Fostering happiness and a sense of purpose could be your secret weapons for a longer, healthier life.
Article Information
Association between subjective well-being and all-cause mortality among older adults in China
Published on BMC Psychiatry, Chunsu Zhu et al.
Abstract
Background: Although several studies in high-income countries have suggested a positive association between subjective well-being (SWB) and mortality, studies conducted in low- and middle-income countries, such as China, are scarce. The purpose of this study is to examine the association between SWB and all-cause mortality among the older Chinese population.
Methods: Data were from the Chinese Longitudinal Healthy Longevity Survey (CLHLS), a population-based longitudinal cohort study in 22 of 31 provinces in mainland China. A total of 13,282 individuals aged 65 ≥ years who were recruited in 2002 and followed-up until 2018 were included. SWB was assessed with an eight-item tool covering life satisfaction, positive affect (including optimism, happiness, personal control and conscientiousness) and negative affect (including anxiety, loneliness and uselessness). Cox proportional hazards regression methods were carried out to estimate the association between SWB and total mortality, adjusting for a wide range of potential confounders. Subgroup analyses and interaction analyses were further conducted.
Results: During the 16.5 years of follow-up, 8459 deaths were identified. Greater SWB was independently associated with a reduced risk of all-cause mortality (adjusted hazard ratio [HR] = 0.85, 95% confidence interval [CI] = 0.81-0.89) after adjustment for age, sex, marital status, education level, place of residence, smoking status, drinking, exercise, diet, BMI, hypertension, diabetes, heart disease, cerebrovascular diseases and cancer. Of the eight individual SWB symptoms, only 2 items, feelings of uselessness (adjusted HR = 0.94, 95% CI = 0.89-0.99) and happiness (adjusted HR = 0.91, 95% CI = 0.86-0.95), were significantly associated with total mortality. Associations remained significant across all subgroups regardless of different characteristics.
Conclusions: Higher SWB overall and 2 certain symptoms (feelings of uselessness and happiness) were independently associated with all-cause mortality risk among older Chinese adults. The association was consistent across different groups, suggesting that promoting a healthier SWB may be beneficial to all older individuals irrespective of their characteristics.
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