In Switzerland alone some 4.5 million boxes of sleeping pills and 2.8 million of tranquilizers are sold each year. In France, it’s 134 million boxes of sleeping pills or tranquilizers.
These figures show that sleeping difficulties are a real health and social problem. Tiredness and lack of sleep are not only unpleasant in themselves; they entail the risk of adverse effects and dangers, especially for the young.
Screens and adolescents
Depression and lack of sleep
Light, sleeping difficulties and some cancers
The impact of sleep on diabetes
The impact of melatonin on infertility
Links between artificial light and obesity
Impact of the lack of sleep on memory
Effects of artificial light on health
Impact of light on sleep, mood and energy
Smartphones’ effects on vision
The adverse effects of LEDs and low-energy light bulbs