Puberty Before Age 10 - A New "Normal'?Quicklink submitted by Amanda Lang Permalink
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|animal studies show that the exposure to some environmental chemicals can cause bodies to mature early. Of particular concern are endocrine-disrupters, like 'xeno-estrogens' or estrogen mimics. These compounds behave like steroid hormones and can alter puberty timing. For obvious ethical reasons, scientists cannot perform controlled studies proving the direct impact of these chemicals on children, so researchers instead look for so-called 'natural experiments,' one of which occurred in 1973 in Michigan, when cattle were accidentally fed grain contaminated with an estrogen-mimicking chemical, the flame retardant PBB. The daughters born to the pregnant women who ate the PBB-laced meat and drank the PBB-laced milk started menstruating significantly earlier than their peers. One concern, among parents and researchers, is the effect of simultaneous exposures to many estrogen-mimics...|
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