Dr. Yvonne Burkart: How fragrance hijacks your hormones

Burkart stresses that front-of-pack claims (“clean,” “sustainable,” “natural”) are often meaningless without ingredient scrutiny. The term “fragrance” or “parfum” can legally hide dozens of chemicals, including phthalates (endocrine disruptors), carcinogens and strong allergens. She advises avoiding products listing generic fragrance unless they explicitly state the scent comes from essential oils, and treating phthalate-free/paraben-free labels as helpful but not sufficient—full ingredient awareness is still required.

Contrary to the traditional toxicology maxim ‘the dose makes the poison,’ endocrine-disrupting chemicals (EDCs) often show non‑monotonic dose responses—meaning very low exposures can be more disruptive than higher ones. Burkart cites lab work showing reproductive effects across two and three generations when pregnant animals were exposed to common pollutants. Chemicals like phthalates, bisphenols and PFAS can alter epigenetic programming, raising risks of infertility, early puberty, obesity and hormone‑related diseases in children, grandchildren and even great‑grandchildren.

She systematically identifies high-impact items: aerosol deodorants (propellants contaminated with benzene, inhalation risk), antiperspirants (aluminum salts linked to breast cancer risk), fragranced cosmetics and hair products (phthalates, formaldehyde releasers, harsh detergents), non-stick pans and plastic utensils (PFAS shedding and microplastics), plastic food containers and coffee cups (microplastics and heavy metals when heated), scented candles and incense (ultrafine particles, VOCs, undisclosed fragrance). Each category has safer alternatives—solid/roll-on deodorants scented with essential oils, stainless steel or cast iron cookware, glass food storage, beeswax/soy (non‑paraffin) candles, and unscented or essential-oil–based cleaners and laundry products.

Burkart notes that micro- and nanoplastics have been detected in lungs, blood, liver, kidneys, placenta, newborn meconium, heart, brain and even penile tissue; one 2024 study found human brains averaging ~0.5% plastic by weight. PFAS from non‑stick cookware, food packaging and water have been associated with kidney and testicular cancer, thyroid disorders, obesity, miscarriage, preeclampsia, endometriosis, PCOS and reduced fertility. Scratched non-stick pans can release thousands to billions of particles; plastic bottles, hot cars, and lined coffee cups shed microplastics that accumulate and cause chronic inflammation and oxidative stress.

Indoor air pollution—largely from cooking, candles, incense, fragranced products and combustion—can reach levels five times worse than outside air. Burkart emphasizes that ultrafine particles from paraffin candles, wood fires and incense can penetrate deep into the lungs, pass into the bloodstream and reach the brain, contributing to systemic oxidative stress and disease. She recommends: opening windows regularly (even in winter), using high-quality air filters where feasible, eliminating synthetic air fresheners and plug‑ins, removing outdoor shoes at the door, dusting/vacuuming frequently (especially with children), and being cautious with wood-burning fireplaces.