Estrogen in birth control pills has a negative impact on fish

ScienceDaily: A new doctoral thesis from Lund University in Sweden shows that hormones found in birth control pills alter the genes in fish, which can cause changes in their behaviour. The thesis also shows that nurse midwives, who are the main prescribers in Sweden, lack information about the environmental impact of hormonal birth control methods, which may affect the advice they provide. The hormone ethinyl-estradiol (EE2) is an active substance in many birth control pills which affects aquatic organisms......

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