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Ravalier PhD Theis.pdf - Anglia Ruskin Research Online

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49<br />

influenza. Similarly evidence from a more recent review by Cohen, Miller<br />

and Rabin (2001) discovered an association between psychological stress<br />

and antibody responses to immunisation, and a meta-analysis by<br />

Segerstrom and Miller (2004) of over 300 empirical articles found that<br />

chronic stress has a negative effect on immune system responses. Early<br />

viral-challenge studies by authors such as Broadbent et al. (1984) and<br />

Totman et al. (1980) are those in which individuals are exposed to viruses<br />

under controlled conditions having previously completed stress measures<br />

have provided only weak support. Despite much of this research<br />

providing only weak support, Cohen, Tyrell and Smith (1993) describe<br />

these studies as having inherent methodological weaknesses.<br />

However, more recent studies have shown there to be a stronger<br />

association between stress and viral illness such as flu and the common<br />

cold than had previously been found. For example, results from a<br />

prospective study of 5,404 participants from the general population by<br />

Smolderen et al. (2007) found that the personality traits of negative affect<br />

and social inhibition, as well as perceived stress, all significantly predicted<br />

influenza-like illness. Similarly, Takkouche et al. (2001) studied the effects<br />

of stress on naturally acquired common cold via a 1-year prospective<br />

cohort study. Again it was found that psychological stress was a<br />

significant risk factor for the common cold.<br />

1b.4.2) Cardiovascular Disease<br />

The impact of psychosocial stress on cardiovascular disease has<br />

interested researchers for some time. Animal studies have often shown a<br />

strong correlation between chronic negative psychosocial environments<br />

and the maturity of cardiovascular issues such as heart attack and stroke<br />

(Kamarck et al., 2005). Epidemiological studies have also indicated that<br />

psychosocial stress can cause Coronary Heart Disease (CHD). One way in<br />

which this link may develop is by causing changes in risk factors to CHD<br />

such as overeating, blood pressure, smoking, and substance and alcohol<br />

misuse, as detailed earlier. In fact, evidence from the Whitehall II studies<br />

demonstrated that chronic workplace stress is a risk factor for complaints

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