[Hugin]

Kids bones are not as strong as they used to be because they are not getting enough sun to produce the Vitamin D needed to build strong bones.

That can be fixed by drinking lots of milk and vitamin D/calcium OJ. Courting skin cancer isn't necessary.

[TexasFreeper2009]

obviously most parents agree with you now, and thus why so many kids have issues.

humans have spent our entire existence outside until AC was invented. I will never be convinced that exposure to the sun regularly year round in modest amounts while moving is bad for you.

What is bad for you is to avoid the sun... then go out suddenly in the middle of summer (with no base tan) and lay motionless for hours during the hottest part of the day. THAT is a recipe for disaster.