FYI!
One of the free science research distributions at the NIH / WHO.
Deals with non ionising impacts which are potentially very costly to some individuals! If one gets sick, as in the case of neurodegenerative disease within the average community, you can imagine millions following unless the something that causes the problem changes. Even if the damage is only peripheral to that individual such as losing balance and having to walk with a support, just add up the numbers over time and space from a badly/ignorantly designed entertainment distribution system and it is rather frightening.