Global Bioweather

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Circadian Rhythm Disorders

Keywords: biological clock, melatonin, jet lag, sleep disorder, shift work, seasonal affective disorder.

Abstract: Daily and seasonal changes in light intensity drive most of your automatic and hormonal body functions. They influence the ‘internal clock’ - the circadian rhythm. One obvious response of this ‘clock’ to light changes is to regulate the sleep-wake cycle. But amongst other functions, it also controls the rhythmic fluctuations in body temperature, mood and behaviour. Symptoms of the 'winter blues' and the seasonal affective disorder can range from just a bad mood to severe depression.

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How the Weather Affects Your Health

By Manfred Kaiser

The most comprehensive guide to everything weather and health.

Includes details on subjects such as:

weather sensitivity; pollution; heat, cold and sun effects; and violent weather.

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