Remove all sources of artificial light during sleep, which could stop the harmful effects on our biological rhythm which is associated with diseases such as cancer, diabetes, depression and obesity.
A scientist who studies breast cancer Richard Stevens says that we must begin to appreciate the dark environment because even light congestion in the household at night helps the brain and body to prepare for sleep. “As deep sleep is needed for our well-being, it is the exposure of the dark during the night.”
‘The importance of sleep finally came in a big way in thinking and practice, but the importance of shading is still greatly underestimated.
Stevens, of the University of Connecticut, says the biorhythm is developed to monitor daily pattern of sunlight and the pattern follows the secretion of hormones, genes work, body temperature and metabolism. Artificial lighting in turn can cause disturbances.
With the use of light bullet-proof shutters Stevens points out that you should throw out all devices that emit blue light which keeps us particularly awake, out of the bedroom. If you need to get up during the night then you need to use lights with tinted red bulbs which are least disturbing.
In a paper published in the journal Philosophical Transactions B Stevens warns of the harmful effects of artificial street and home lighting.
‘Excessive lighting in the night sky is an important issue such as climate change “says Stevens, adding that the negative effects of artificial lighting are especially vulnerable for children, including unborn babies.
It is believed, for example, that artificial lighting disrupts the secretion of melatonin, which prevents the appearance of breast tumors.
Studies have shown that women who work at night are exposed to a higher risk of developing breast cancer and night working hours are associated with increased risk of prostate or bowel cancer. Other studies have indicated a possible link between artificial lighting during the night and the occurrence of diabetes, depression and obesity.