Birth control pills end up, eventually, like everything consumed, going through sewage plants. In some cases, they have wound up in rivers and, as birth control pills do, stunted the hormones in fish.
A specific example is the rainbow trout in Western Washington, where the male of the species suffered hormone deficiency due to exposure of birth control pills.
Controlled experiments with live fish concluded that fish in water exposed to brith control pills were half as fertile as those in clean water.
Yes it is. According to the Freshwater Institute’s Fisheries and Oceans section, “The potent synthetic estrogens excreted by women taking hormone replacement therapy or birth control pills are not completely broken down in the sewage treatment process and are discharged into waterways.” The ingestion of estrogen has significantly altered the genetic make-up of male fish in our waters. This has been making it difficult to tell the male and female fish apart. Studies have shown that some male fish have been abnormally growing eggs and secreting yolk sac proteins. If this continues to go on, this can eventually threaten various fish populations.
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