Luminosity is as important to human beings as are air, food and water. Because it is insufficient during certain seasons, some people suffer from affective troubles, moroseness, tiredness, sadness, depression or lethargy. Luminotherapy may offer some relief.
A daily 15 to 30 minute exposition to a 10,000 lux light, preferably when you get out of bed or early in the morning, will offer you the well-being of a sunny spring day and will help you fight the winter blues. Some people may require a 45 to 60 minute exposition to achieve the relief of depressive feelings.
An intensity of 10,000 lux corresponds to that of a bright morning. In comparison, during summer, at noon, luminosity will reach 50,000 to 70,000 lux; on the beach, it will reach 100,000 lux. Conventional home lamps offer between 200 and 700 lux.