February 2023 in “Vaccines” COVID-19 may harm male reproductive health and lower testosterone levels, potentially affecting fertility and causing erectile dysfunction. More research is needed.
12 citations
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June 2023 in “Journal of trace elements in medicine and biology” Eating too much selenium can cause bad breath, hair loss, and nail changes, with harmful effects starting at low daily doses.
7 citations
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May 2023 in “Nanomaterials” Titanium dioxide nanoparticles may harm the male reproductive system.
25 citations
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July 2013 in “Environmental Toxicology and Chemistry” Spironolactone harms fish reproduction and is more potent in fish than invertebrates, needing environmental monitoring.
23 citations
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January 2001 in “International journal of toxicology” St. John's Wort extract and oil safety in cosmetics is unclear; more data needed on photosensitization, toxicity, and human irritation.