Blue light has a negative impact on melatonin in the long run. Melatonin itself is a hormone that makes a person feel sleepy and fall asleep easier. If the melatonin level is low, children will also have difficulty falling asleep.

Children are more likely to be depressed when using excessive gadgets. This is because blue light stimulates the production of neurotoxins, which are toxins in the brain and trigger depression. "So children are more prone to being moody, finding it difficult to be happy," said Ika.

Weight gain in children when playing gadgets frequently is not only due to lack of activity. Blue light also triggers cortisol hormone which can stimulate excessive appetite. So, it's no wonder that children's food portions increase when playing gadgets, yes.

Blue light can also damage the retina and increase the potential for cataracts in the long term. This can be prevented by using gadgets not too close to the eyes. Children can also use gadgets with blue light protection.