Dec. 9, 2025

Daily chemical exposure timing and your fertility

Fertility specialist Oluyemisi (Yemi) Famuyiwa discusses her article, "." Yemi introduces her fascinating concept of "chrono-exposomics," explaining how the time of day you are exposed to environmental chemicals may be as important as the dose. She...

Fertility specialist Oluyemisi (Yemi) Famuyiwa discusses her article, "How timing affects chemical exposure risks." Yemi introduces her fascinating concept of "chrono-exposomics," explaining how the time of day you are exposed to environmental chemicals may be as important as the dose. She reveals how our body's circadian rhythms (like liver detoxification and skin permeability) change over 24 hours, meaning the same exposure at 8 p.m. is not the same as at 8 a.m. Using the example of a manicure, Yemi explores how endocrine-disrupting chemicals (like phthalates and TPO) in nail products might be absorbed more heavily in the evening, posing a unique risk to fertility and hormonal health. Learn the practical, evidence-informed adjustments you can make to align your self-care routines with your body's natural schedule.

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