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Or something protective that's declining.

I wonder what the rates of dietary fiber consumption look like over the last few decades.

Low! Given the prevalence of anecdotes about Taco Bell.

> also have more stringent standards on food additives

It is hard to measure how cancerous a substance is.

Standards seem to be quite porous for a variety of reasons. For example existing allowed substances that get withdrawn indicate that the standards are imprecise.

With mobile phones being used more for social/texting than calling, where are they commonly being worn on the human body?

https://www.ewg.org/research/ewgs-guide-safer-cell-phone-use