Nowadays the lifestyle of people has changed. Their time is spent in air-conditioned rooms and chambers. When they are in their homes they remain within four walls equipped with air-conditioner, they travel in air-conditioned cars/vehicles, their offices are also fully air-conditioned and thus they don't come under direct sunlight. Many of them even don't see the sun because of their busy schedule.
I know one thing that every natural thing has something good for us. Indeed there are side effects with excessive use but basically, nature is helpful for us.
No life without Sun
Knowledge is power.
K Mohan @ Moga
'Idhuvum Kadandhu Pogum "
Even this challenging situation would ease