Japanese older adults with several social and health risk factors—such as being male, having low education, smoking, and being socially isolated—tend to live up to 205 days less than those without...
Mechanism
Synthesis from 1 study
When someone faces many hard life problems at once—like being poor, alone, and smoking—your body stays stressed for years. This wears down your immune system and causes hidden damage inside, making you more likely to get sick and die sooner.
Most probable mechanism
When people face many tough life problems at once—like being poor, not having much education, smoking, and feeling alone—your body stays in a constant state of stress. This keeps stress hormones high and weakens your immune system over time, making it harder to fight off sickness and repair damage, which shortens life.
Chronic psychosocial stress leads to sustained elevation of cortisol and other glucocorticoids
Elevated glucocorticoids suppress immune cell function and promote systemic inflammation
Chronic inflammation and reduced immune surveillance increase susceptibility to infectious, cardiovascular, and metabolic diseases
Cumulative physiological damage from prolonged inflammation and metabolic dysregulation accelerates biological aging and reduces survival time
Evidence from Studies
Supporting (1)
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Contradicting (0)
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