A naturopathic look at endocrine-disrupting chemicals, and simple, evidence-based steps for women and men who want to protect their hormones and fertility.
When couples come to me struggling to conceive, we talk about cycles, sperm, sleep, stress and nutrition. But there's another piece of the picture that rarely comes up in a standard appointment: the chemicals we meet every day in our food, water, kitchens and bathroom cabinets.
Many of these are endocrine-disrupting chemicals (EDCs) - substances that interfere with how your body makes, uses and clears hormones. A 2025 review of a decade of human studies found consistent links between EDC exposure and reduced egg supply, lower sperm quality, PCOS, infertility and altered hormone levels.
That can sound frightening. But here's the great news: most of our exposure comes from everyday choices we can change. And your body already has a remarkable built-in system for clearing toxins - one we can actively support.
In naturopathic medicine we start with identifying and removing the cause, and then support the body's own healing power. That's exactly the approach this post takes.
The five biggest culprits - and where they hide
These chemical families come up again and again in fertility research:
Bisphenols (BPA, BPS, BPF) - in canned food linings, hard plastic bottles and thermal paper receipts. BPA weakly mimics estrogen. And don’t be fooled - "BPA-free" often just means they’ve substituted another bisphenol that acts similarly!
Phthalates - the plasticizers in soft vinyl, plastic food tubing and the hidden "fragrance" in lotions, cleaners, candles and air fresheners. Several of these lower testosterone production.
PFAS ("forever chemicals") - These lurk in contaminated drinking water, grease-proof food packaging and scratched non-stick pans. They stay in the body for years.
Pesticides - residues on conventionally grown high-residue produce, plus home and garden sprays.
Heavy metals and smoke - lead in old paint and pipes, mercury in large predatory fish and petroleum emissions, and cadmium, mostly from cigarette smoke and synthetic fabrics.
The encouraging news? BPA and phthalates leave the body within hours to days. In one study, families who ate only fresh, unpackaged food for three days saw their BPA levels fall by 66% and DEHP phthalate levels by more than half. In another, teenage girls who switched to cleaner personal care products for three days cut paraben levels by about 44–45%.
What the research shows
For Women
EDCs are most consistently linked to a smaller egg supply, PCOS, endometriosis, irregular cycles and lower IVF success. BPA, phthalates and PFAS have all been found in the fluid surrounding developing eggs.
One striking example: in a Singapore study of women trying to conceive, those with higher blood PFAS levels had roughly a 30–40% lower chance of becoming pregnant or having a live birth within a year.
For Men
I often find that when couples are having difficulty conceiving, all of the focus is on the woman, and how well her reproductive system is working, and focus on the man frequently doesn’t start until late in the game. As half of the fertility equation, though, the man’s health is just as important, and should be looked at from the beginning.
Average sperm counts worldwide have roughly halved since the 1970s, and the decline has sped up since 2000. Phthalates have robust evidence linking them to lower semen quality and testosterone. In Harvard's EARTH study, men eating the most high-pesticide-residue produce had a 49% lower total sperm count — while overall fruit and vegetable intake wasn't the problem at all.
Here's something I always share with male patients: sperm take about three months to develop. Changes you make today show up in a semen analysis roughly 90 days later. That makes men's fertility wonderfully responsive to lifestyle change.
A note on the evidence: most of these studies show associations, not proof that any one chemical caused any one person's infertility. Fertility almost always has several contributing factors. The goal is to reduce avoidable risks — never to blame yourself.
The naturopathic approach: support your body's own detox system
Your liver, gut, kidneys, skin and lungs clear chemicals every single day. Once you've reduced what's coming in, these five pillars help them do their job well.
Nutrition
Eat cruciferous vegetables daily - broccoli, broccoli sprouts, kale, cabbage, Brussels sprouts. They contain sulforaphane, which switches on the liver's phase II detox enzymes. In a 12-week trial, a daily broccoli-sprout drink increased excretion of the pollutant benzene by 61%.
Aim for 25–38 g of fiber a day. Fiber binds chemicals and spent estrogens in the gut so they leave the body instead of being reabsorbed. Ground flaxseed, legumes and berries are great sources.
Get enough protein, B vitamins and minerals. Your liver needs amino acids to package toxins for removal. Calcium, iron and zinc reduce absorption of lead and cadmium - in one trial, calcium in pregnancy lowered blood lead by 11%.
Eat the rainbow. Antioxidant-rich foods help protect eggs and sperm from oxidative damage.
Physical activity
Movement improves insulin sensitivity, balances hormones and supports circulation and bowel regularity. Sweat is also a minor exit route — small studies have found BPA and phthalates in sweat, though not PFAS.
Two cautions: men trying to conceive should skip saunas and hot tubs, since heat lowers sperm quality. And lose weight gradually — fat stores persistent chemicals, and rapid weight loss releases them into the blood.
Hydration
Your kidneys clear most BPA, phthalate and paraben metabolites in urine. Drink enough filtered water for pale-yellow urine, and carry it in glass or stainless steel rather than plastic.
Sleep
Deep sleep is your nightly reset. Testosterone rises during sleep, and melatonin acts as an antioxidant around developing eggs. Aim for 7–9 hours on a consistent schedule in a dark, cool room.
Stress management
Chronic stress raises cortisol, which can suppress the brain signals that drive ovulation and sperm production. A daily 10-minute practice of breathwork, meditation, yoga or a walk in nature genuinely matters.
What I don't recommend undertaking without guidance: juice cleanses, extreme fasts, detox foot pads or chelation. These drastic methodologies should only be considered with the help of a professional that truly understands how to approach them, and when they can be effective, but can be unsafe or counterproductive if not implemented with correct support. Gentle and consistent beats harsh and dramatic every time!
Where to start this week
You don't need to overhaul your life overnight. Begin with these six changes — ideally both partners, at least three months before trying to conceive:
Never heat food in plastic. Use glass or ceramic in the microwave and for hot leftovers, or heat on the stove or in a toaster oven in glass, ceramic or stainless steel.
Swap canned food for fresh, frozen or glass-jarred. BPA and other Bisphenols in can linings leach into foods, expecially acidic ones, like tomatoes.
Avoid buying acidic foods in plastics - Acids increase the leaching of EDCs and Xenoestrogens into foods.
Go fragrance-free with lotion, laundry detergent, candles and air fresheners.
Check your water. Read your utility's water quality report or test your well, and use a certified filter if needed.
Add one serving of cruciferous vegetables a day - the easiest detox-supporting habit there is.
And if you smoke, quitting is the single biggest step you can take for your fertility and your partner's.
The bottom line
Nearly everyone carries some of these chemicals, and having them doesn't mean you'll be infertile. Small, steady changes really do lower your body's load, sometimes within days. Combine them with nourishing food, movement, good sleep and calm, and you give your hormones the best possible environment to thrive.
If you'd like a personalized plan, including which tests make sense for you and how to support your body safely before conception, book a Free Discovery Call.
And for a deeper dive, download my free e-book, Hidden Hormone Disruptors: Toxins, Hormonal Balance & Fertility.
This post is general education, not medical advice. If you've been trying to conceive for 12 months (6 months if you're 35 or older), please see your doctor or a fertility specialist.
Sources
Tzouma Z, et al. EDC exposure and fertility outcomes: a decade of human evidence. Life, 2025.
Rudel RA, et al. Food packaging and BPA and DEHP exposure. Environ Health Perspect, 2011.
Harley KG, et al. The HERMOSA intervention study. Environ Health Perspect, 2016.
Cohen NJ, et al. PFAS and women's fertility in a Singaporean preconception cohort. Sci Total Environ, 2023.
Levine H, et al. Temporal trends in sperm count, Hum Reprod Update, 2022, as reported by Down To Earth.
Radke EG, et al. Phthalate exposure and male reproductive outcomes. Environ Int, 2018.
Chiu YH, et al. Pesticide residues in produce and semen quality. Hum Reprod, 2015.
Egner PA, et al. Broccoli sprout beverage and detoxication of airborne pollutants. Cancer Prev Res, 2014.
Ettinger AS, et al. Calcium supplementation and blood lead in pregnancy. Environ Health Perspect, 2009.
Genuis SJ, et al. Human excretion of BPA: Blood, Urine, and Sweat study, 2012.