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Stress and Causes of Death

Stress and Causes of Death. Prolonged stress combined with unhealthy behaviors may increase our risk for one of today's four leading diseases. Behavioral Medicine.

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Stress and Causes of Death

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  1. Stress and Causes of Death Prolonged stress combined with unhealthy behaviors may increase our risk for one of today's four leading diseases.

  2. Behavioral Medicine Centers for Disease Control (CDC) claim that half of the deaths in the US are due to people’s behaviors (smoking, alcoholism, unprotected sex, insufficient exercise, drugs, and poor nutrition). Psychologists and physicians have thus developed an interdisciplinary field of behavioral medicine that integrates behavioral knowledge with medical knowledge.

  3. Health Psychology Health psychology is a field of psychology that contributes to behavioral medicine. The field studies stress-related aspects of disease and asks the following questions: • How do emotions and personality factors influence the risk of disease? • What attitudes and behaviors prevent illness and promote health and well-being? • How do our perceptions determine stress? • How can we reduce or control stress?

  4. Stress and Illness Stress can be adaptive. In a fearful or stress- causing situation, we can run away and save our lives. Stress can be maladaptive. If it is prolonged (chronic stress), it increases our risk of illness and health problems.

  5. The Stress Response System Canon proposed that the stress response (fast) was a fight-or-flight response marked by the outpouring of epinephrine and norepinephrine from the inner adrenal glands, increasing heart and respiration rates, mobilizing sugar and fat, and dulling pain.

  6. The Stress Response System The hypothalamus and the pituitary gland also respond to stress (slow) by triggering the outer adrenal glands to secrete glucocorticoids (cortisol).

  7. General Adaptation Syndrome According to Selye, a stress response to any kind of stimulation is similar. The stressed individual goes through three phases. EPA/ Yuri Kochetkov/ Landov

  8. Stress and Heart Disease • Frequent or chronic stress can cause damage to the heart and blood vessels • Type A personality • Competitive, hard-driving, impatient, verbally aggressive, and anger-prone people • Respond to life events with impatience and hostility • Correlated with development of heart disease • Type B personality • Relaxed and easygoing

  9. Correlation? • FINDINGS: Of the original sample of 3200, 257 participants had developed coronary heart disease during the 81⁄2 years • 70% of them had been classified as Type A. • Type As were found to have higher levels of cholesterol, adrenaline, and noradrenaline than Type Bs. • A significant but moderate correlation was found between personality type and coronary heart disease. • CONCLUSIONS: The research shows that Type A behaviour pattern is fairly strongly linked to CHD. Friedman and Rosenman concluded that the Type A behaviour pattern increases the individual’s experience of stress, which increases physiological reactivity, and that in turn increases vulnerability to CHD. • The high levels of the stress hormones suggest that they do experience more stress than Type Bs. The stress response inhibits digestion, which leads to the higher level of cholesterol in the blood, and this places Type As at risk of CHD. Implications include the need to reduce the “harmful” Type A characteristics.

  10. Stress and the Immune System B lymphocytes fight bacterial infections, T lymphocytes attack cancer cells and viruses, and microphages ingest foreign substances. During stress, energy is mobilized away from the immune system making it vulnerable. Lennart Nilsson/ Boehringer Ingelhein International GmbH

  11. Stress and Colds People with the highest life stress scores were also the most vulnerable when exposed to an experimental cold virus.

  12. Stress and AIDS Stress and negative emotions may accelerate the progression from human immunodeficiency virus (HIV) to acquired immune deficiency syndrome (AIDS). UNAIDS/ G. Pirozzi

  13. Stress and Cancer Stress does not create cancer cells. Researchers disagree on whether stress influences the progression of cancer. However, they do agree that avoiding stress and having a hopeful attitude cannot reverse advanced cancer.

  14. Stress and Immune Conditioning If the immune system can be suppressed through conditioning, researchers believe that immune- enhancing responses can be inculcated to combat viral diseases.

  15. Health-Related Consequences Stress can have a variety of health-related consequences. Kathleen Finlay/ Masterfile

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