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HOW BRIGHTER DAYS IMPROVE HEALTH CONDITIONS

                     Do you have trouble sleeping? The problem could be a lack of exposure to sun bright light during the day, especially if you are elderly. Researchers in Japan recently conducted a study of nursing-home residents who suffered from insomnia, and they found that the poor quality of the subjects sleep was related to their limited daily exposure to environmental light. At the same time, blood tests revealed that these elderly residents had low levels of the hormone melatonin.        Melatonin is secreted by the pineal gland in the brain. Under normal conditions, the daily rhythm of melatonin secretion causes concentrations in the blood to be “high during the nighttime and nearly undetectable during the daytime.        However, when the elderly are not expose to enough light during the day, blood melatonin levels fall. It seems that as far as the body is concerned, this blurs the distinction between day and night, which the researchers believe affects