Smartphones have become a necessary part of our lives. These are advanced mobile operating systems with personal computer operating systems and other features useful for hand use including receiving and placing calls, text messages, managing apps like calendar, notes, GPS navigation, digital camera, etc. Display is usually touchscreen and this is an accessible way to use internet.
Apart from its many benefits, smartphones hold a variety of side effects. One of this is it emits a blue light which allows us to read even in brightest points of day. This light can never be turned off or adjusted but is continuously emitted by smartphones, laptops, televisions, etc. This light imitates sun and confuses brain to assume it to be day even when its night actually.
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Smartphones have become a necessary part of our lives but it hold variety of side effects.
This confusion of brain stops the melatonin release and hence less sleep in night. Melatonin is the hormone which is sleep-inducing and is released by Pineal gland of body. This hormone controls our daily sleep wake cycles or body’s internal clock known as Circadian rhythm. Its levels are generally elevated in night and lowered in morning causing to waken up but stoppage of this hormone release prevents from falling asleep.
The blue light emitted reacts with photo receptor Melanospin which is sensitive to wide range of blue- green frequencies around 480 nm and is found in retinal ganglionic cells of eyes which lead to deprivation of sleep and insomnia.
This impact on sleep by smartphones and these electronic devices are more on teenagers as teenagers are more sensitive and the circadian rhythm shifts during adolescence and hence teenagers are more awake during night. Playing video games on phones or watching television shows can make them more awake and more difficult early mornings next day. Other effects include:-
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