It's kinda useless to raise this point unless we can think of some action to do about it.

Should people avoid the sun? Probably not. Sunlight is proven to have a lot benefit in regulating mood and biological clock.

Should people wear sunscream. Maybe yes, maybe no. I'm not sure. I myself prefer sunlight touch my skin. So unless the UV rate is too high, I won't put on sunscreen.

What are the actions that normal everyday ppl can take in your opinion?

I'm glad that 100 F summers for most of my life were normal and not the result of a heat wave, or I would probably be skating with a cane about now.