Environmental Toxins and Fertility: What You Need to Know

Fertility challenges affect approximately one in six couples, with both male and female factors contributing equally. While fertility challenges are multifactorial, shaped by both genetic and environmental influences, there is a growing body of evidence which highlights the role of endocrine-disrupting chemicals (EDCs) as a largely silent contributor. These toxic substances —commonly found in plastics, personal care products (PCPs), household items and environmental pollutants, can interfere with hormonal signalling in both men and women.

In this blog, we’ll explore what hormones are, what endocrine-disrupting chemicals (EDCs) are and where they’re commonly found, their impact on male and female fertility, and practical ways to reduce everyday exposure.

The importance of hormonal health

Hormones play a central role in ovulation, sperm health, cycle regulation and implantation and even low-level ongoing exposure to these EDC substances may influence fertility over time. Hormonal disruption is not only relevant to fertility; it may also influence broader health patterns such as metabolic health, immune function, neurodevelopment and nervous system
regulation. The encouraging news is that research suggests meaningful improvements in certain biological markers can occur within weeks of reducing exposure.

What are Hormones?

Toxins_Hormones Hormones are chemical messengers that help coordinate how the body functions. They are released by glands of the endocrine system and travel through the bloodstream to deliver instructions to tissues and organs, influencing processes such as growth, metabolism, mood, sleep and reproduction.

The human body has over 50 known hormones, produced by glands including the brain (hypothalamus and pituitary), thyroid, adrenal glands, pancreas, ovaries, testes, and placenta during pregnancy. Each hormone works in very small amounts, and their effects depend on precise timing and balance. Because hormones are so finely regulated, even subtle disruptions can have wide-ranging effects on health and fertility.

What Are Endocrine Disrupting Chemicals (EDCs)?

Endocrine-disrupting chemicals (EDCs) are generally defined as substances—mostly synthetic or man-made—that can interfere with the body’s hormonal system. Because many chemicals (good and bad) can affect the body’s hormonal system, the World Health Organisation (WHO) and International Programme on Chemical Safety (IPCS) put forward a report indicating that in order for a substance to be considered an EDC, “it must cause measurable harm through a plausible effect on the endocrine system”. More than 1,400 EDCs have been identified and they are commonly found in everyday products such as plastics, detergents, flame retardants, pesticides and personal care items. Humans are exposed through ingestion, inhalation, and skin contact, and exposure can begin as early as in the womb since many EDCs can cross the placenta.

EDCs may mimic, block, or alter the way hormones are produced, transported, or metabolised, which can affect both men’s and women’s reproductive health. The impact of EDCs depends heavily on the timing of exposure.

Why Timing of Exposure to EDCs Matter

Certain life stages are particularly sensitive to endocrine-disrupting chemicals. Exposure during critical windows—such as preconception, pregnancy, infancy and puberty—can have lasting effects on hormonal regulation and reproductive health.
Developing foetuses and infants are especially vulnerable due to their immature endocrine and detoxification systems, while adolescents may experience disruption during key periods of hormonal maturation.

In adults, long-term, cumulative exposure can subtly alter hormone balance and fertility potential, even without obvious
symptoms. Importantly, exposure during prenatal and early postnatal development may lead to effects that persist into adulthood. Additionally, some EDCs can cause epigenetic changes—modifying DNA or histones—which may impair gamete formation and even carry effects across generations.

Key Biological Pathways Linking EDCs and Fertility

Fertility_Toxins Endocrine-disrupting chemicals (EDCs) can affect fertility through multiple pathways, with one of the main mechanisms involving the hypothalamic–pituitary–gonadal (HPG) axis. Chemicals like bisphenol A (BPA) and certain phthalates can act on oestrogen and androgen receptors, altering the release of key reproductive hormones such as luteinizing hormone (LH) and follicle-stimulating hormone (FSH). These hormonal changes can disrupt sperm production in men and egg development in women, impacting fertility.

EDCs also contribute to oxidative stress and inflammation, which are central to their reproductive toxicity. Substances like BPA and PFAS increase reactive oxygen species (ROS), damaging sperm membranes, reducing motility, and lowering oocyte quality. They can also interfere with mitochondrial function, reducing energy (ATP) availability in germ cells, which is critical for fertilisation and early embryo development.

Phthalates and BPA

Phthalates are a group of synthetic chemicals widely used since the 1930s in consumer products. High molecular weight (HMW) phthalates, like di-(2-ethylhexyl) phthalate (DEHP) are commonly used in PVC plastics found in containers, food
packaging, vinyl flooring, furniture and medical devices. Low molecular weight (LMW) phthalates such as diethyl phthalate (DEP) and butylbenzyl phthalate (BBzP), are used as solvents in personal care products (perfumes, lotions, cosmetics,
shampoo), paints and adhesives. Because phthalates are not permanently bound to these products, they can leach into the environment, food, or drinks, entering the body through ingestion, inhalation, or skin contact.

Bisphenol A (BPA) is another common chemical found in plastics, food containers and receipts. BPA is a xeno-oestrogen, meaning it can mimic or block oestrogen, interfering with the oestrogen-signalling pathway and disrupting normal endocrine
function. Both phthalates and BPA are considered significant contributors to hormonal disruption and fertility challenges due to their widespread use and ability to enter the human body through everyday exposures.

Impact of EDCs on Male Fertility: Epidemiological and Clinical Evidence

BPA and phthalates on sperm quality – associated with reduced sperm motility, concentration and increased DNA fragmentation in men. Also associated with altered gene expression, decreased testosterone, impaired spermatogenesis and transgenerational reproductive effects. Prolonged phthalate exposure has also been found to disrupt male genital development, contributing to a condition known as testicular dysgenesis syndrome which has also increases the risk for developing testicular cancer.

Research led by Dr Shanna H. Swan has shown that anogenital distance—the measurement between the anus and the genitalia, is one of the most sensitive markers of prenatal phthalate exposure. A shorter anogenital distance reflects hormonal disruption occurring while the male foetus is developing in the womb, providing evidence of in-utero exposure to endocrine-disrupting chemicals (EDCs).

Phthalate metabolites and BPA biomarkers affect hormonal imbalance – correlated with lower serum testosterone and altered LH/FSH ratios in population studies. Also associated with poor sperm maturation and reduced Leydig/Sertoli cell function.
Testicular morphology shows limited biopsy evidence – indirect clinical associations with infertility and reduced sperm counts.

EDCs in human epigenetics studies – show altered sperm DNA methylation and microRNA profiles linked to urinary EDC biomarkers. Multiple EDCs linked to sperm DNA damage, apoptosis (cell death) and infertility. PCB organochlorines – linked with impaired testicular development and energy metabolism.

Impact of EDCs on Female Fertility: Potential Clinical Conditions Identified in Research

Bisphenol A (BPA)
Sources of exposure: Consumer products, including water bottles, food storage containers, dental sealants and canned food lining. Possible clinical condition: Lower ovarian reserve, lower antral follicular count and PCO(S).

Phthalates
Sources of exposure: Food packaging, toys, building materials, medical supplies, and personal care items, including cosmetics, lotion and scents. Possible clinical condition: Endometriosis, early pubertal onset, HPG axis dysregulations, reduced oocyte yield, higher rates of infertility and greater incidence of pregnancy loss.

Phthalates and EDCs can cross the placental barrier during pregnancy and has the potential to disrupt the intrauterine environment.

Polychlorinated Biphenyls (PCBs)
Sources of exposure: Paints, dyes and carbonless copy paper, lubricants and hydraulic fluids. Possible clinical condition: Endometriosis, breast cancer and infertility.

Dioxins
Sources of exposure: Numerous industrial operations using chlorine, for instance, burning garbage, bleaching paper and pulp, making chemicals and producing various herbicides. Possible clinical condition: Endometriosis, premature thelarche (onset of breast development) and breast cancer.

Pesticides
Sources of exposure: Direct exposure on the farm, contaminated food, air, etc. Possible clinical condition: Infertility, precocious/early puberty, risk of breast cancer, PCO(S) and infertility.

Metals in personal care products (PCPs)
Sources of exposure: Cosmetics. Possible clinical condition: Irregular menstrual cycle, defective pubertal onset, dysmenorrhoea and infertility.

Triclosan (TCS)
Sources of exposure: Personal care products and household products. Possible clinical condition: Menstrual irregularity, abnormal foetal development and infertility.

Practical Ways to Reduce Everyday Exposure

No shoes indoors – Keeps floors cleaner and reduces bringing harmful chemicals indoors.
Vacuum and damp dust regularly – Wipe surfaces with a damp cloth/wipe rather than dry dusting to capture dust and toxins that settle.
Mind household cleaners – Swap chemical cleaners for natural, unscented alternatives.
Ventilate your home – Air out rooms regularly to reduce indoor pollutants and dust-bound EDCs.
Limit exposure to flame retardants – Wash new furniture covers, dust regularly, and avoid stain-resistant fabrics; choose PBDE-free products.
Cook with safer cookware – Use stainless steel or cast-iron instead of non-stick or Teflon pans; avoid using plastic utensils, particularly when cooking hot food or making salad dressings.
Store oils, fats, and acidic foods in glass – Avoid buying oils in plastic.
Invest in glass meal prep containers – This automatically eliminates putting warm food into plastic and also having to transfer into a glass container before re-heating.
Filter your water – Use a high-quality filter to reduce contaminants like BPA, PFAS, and pesticides.
Avoid heating food in plastic – Never warm food in plastic containers, especially in the microwave. This prevents leaching of chemicals like BPA and phthalates into food.
Reduce takeout in plastic or Styrofoam – Cold foods like sushi or salads packaged in plastic are
not as problematic as hot foods.
Use a reusable cup – Opt for stainless steel or glass for coffees and teas at work. Take a “keep cup”
with you when going out.
Opt for loose leaf teas – instead of tea bags.
Reduce canned foods – Particularly tomatoes as they’re acidic; choose fresh, frozen, or glass-packaged alternatives to avoid BPA.
Choosing natural fibres for clothing – cotton, linen, wool, silk, or hemp can reduce exposure to synthetic chemicals and microplastics while improving breathability and comfort for everyday wear.
Avoid wearing synthetic athletic clothing for prolonged periods – changing out of sweaty activewear promptly, as heat and moisture can increase skin exposure to chemicals and microplastics from these fabrics.
Choose safer personal care products – Avoid phthalates, parabens, triclosan and chemical-heavy cosmetics in personal care products. Choose low-tox hair care products, shampoos, conditioners, body wash, body lotions, toothpaste and nail products.
Avoid artificial fragrances, including scented candles, plug-in diffusers and car air fresheners; instead, choose high-quality essential oils used in diffusers or roller bottles.
Check children’s products – Use BPA-free bottles, toys and feeding equipment.
Handle receipts mindfully – Minimise contact with thermal paper; use gloves or a thumb pin if you handle receipts for work.
Support natural detox – Regular exercise, hydration, and a nutrient-rich diet support liver function and hormone metabolism.

Conclusion

Creating a low-toxin home and lifestyle benefits not just your health, but also your future baby, making your home a nurturing and welcoming space for new life. You don’t need to do a complete overhaul. Start with small manageable steps. The good news is that intentional and consistent choices add up to benefit your health. Your body has an incredible capacity to heal and adapt. You deserve to have the information to make informed choices for yourself and family. Start small, start today.

How Acupuncture Can Help

In addition to supporting hormone balance and reproductive function, acupuncture can optimise the body’s elimination and detoxification pathways, including the liver, kidneys, lymphatic system and bowels. It also works by regulating the nervous system, which is often disrupted by endocrine-disrupting chemicals (EDCs) and HPG axis imbalances. By improving circulation, reducing stress and harmonising organ function through Chinese medicine principles, acupuncture supports a healthier internal environment to balance hormones and improve overall reproductive vitality.

To make an appointment you can call us on 0414 067 874 or you can book online here.

This blog was written by Dr Sadika Husain (TCM)