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Updated Mar 23, 2026

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Understanding Stress from Life Changes: Impact Explained

Theodora Li

@theodorali

Life changes, both positive and negative, are major sources of... Show more

Sources of stress: Life changes

# KNOWLEDGE

# EVALUATION

WHAT ARE LIFE CHANGES

- Life changes are often major stressors

o Stressful n

Life Changes as Sources of Stress

Ever noticed how you feel drained after big life events, even the exciting ones? Life changes are significant stressors because they force us to make major psychological adjustments to cope with new circumstances.

The bigger the change, the more stress it creates. What's particularly interesting is that these effects are cumulative - they add up over time. Moving house, starting a new job, and ending a relationship in the same year creates far more stress than experiencing just one of these events.

Holmes and Rahe's Social Readjustment Rating Scale (SRRS) revolutionised how we measure this stress. They assigned Life Change Units (LCUs) to different events, with higher scores indicating more adjustment needed. Their research suggested that people scoring over 300 LCUs in a year had an 80% chance of becoming ill.

Rahe et al.'s Navy study provided compelling evidence through a prospective approach. They tracked US Navy personnel, measuring their life changes before deployment and then monitoring illness rates during their tour. The results showed a clear positive correlation between life change stress and subsequent illness.

Key Insight: Research consistently shows that people experiencing more life changes have higher rates of illness in the following months, suggesting our bodies pay a real price for psychological adjustment.

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Psychology

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Updated Mar 23, 2026

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1 page

Understanding Stress from Life Changes: Impact Explained

Theodora Li

@theodorali

Life changes, both positive and negative, are major sources of stress that can seriously impact your health. Understanding how these changes affect us helps explain why some people get ill more often during times of change, and why even good... Show more

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Life Changes as Sources of Stress

Key Insight: Research consistently shows that people experiencing more life changes have higher rates of illness in the following months, suggesting our bodies pay a real price for psychological adjustment.