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October 2003 in “Birth Defects Research” Both genes and environmental factors like chemicals may contribute to the increase in hypospadias, but the exact causes are still unclear.
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July 2014 in “General and Comparative Endocrinology” Finasteride affects frog testes by increasing testosterone, decreasing 5α-DHT, and impacting genes related to reproduction and other functions.
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March 2013 in “Human Reproduction Update” Products should be called 'sperm-safe' only after thorough, well-designed tests.
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July 1980 in “Journal of Toxicology and Environmental Health” High doses of ethynylestradiol in rats caused growth issues, organ changes, and some tumors, but didn't increase overall tumor rates.
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May 2021 in “Journal of exposure science & environmental epidemiology/Journal of exposure science and environmental epidemiology” Common Black hair care products may affect hormone levels and potentially impact health, especially in reproductive and metabolic areas.