Advice from experts on how to limit your exposure and your impact on the environment.

“It’s hard not to make people too worried about a lot of things,” said UW-Madison pediatric endocrinologist Ellen Connor, after running through a plethora of hypothesized health effects — genital abnormalities, tumors, lower sperm counts, diabetes, early puberty — and an equally long list of worrisome chemicals.

The four groups of chemicals that trigger consumption advisories — PCBs, mercury, dioxins and PFOS (perfluorooctane sulfate) — have all been associated with endocrine disruption.

Emails from the Wisconsin Department of Natural Resources and the U.S. Environmental Protection Agency.

Males exposed to chemicals managed to mate if other males were not around. But if they had to compete with the control males, however, they “suffered nearly total reproductive failure”: They had no game.

More about nonylphenol and BPA, two chemicals commonly found in Minnesota’s waters.

Endocrine disruptors have been called a “global threat” to people and wildlife, but Wisconsin is lagging behind Minnesota in testing its waters for them.

Nearly a fifth of Wisconsin’s 70 active frac sand mines and processing plants were cited for environmental violations last year, as the industry continued to expand at a rapid clip.