| Abstract | Preliminary findings of an interdisciplinary investigation at the Hong Kong Polytechnic University (PolyU) suggest that the neurohormone melatonin may be affected by exposure to the light/dark cycle and subsequently resulting in alteration of the sleep pattern of old people. As melatonin plays a critical role in sleep regulation and the ageing process, this implies that sleep regulation through melatonin can possibly be achieved without depending on pharmacological products. In order to understand the relationship between exposure to bright light, melatonin production and sleep regulation, the research team have conducted a detailed study of the sleep behaviour of 859 elderly Chinese people in four cities. The findings will have a far-reaching impact on providing health care services for the elderly. |
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