How Toxins May Be Affecting Your Hormones and Mood

Medically reviewed by Tracy McCarthy, MD — Board-Certified Psychiatrist, IFM-Certified Functional Medicine Practitioner

The Missing Piece in Many Hormonal Conversations

If you've been told your hormones are "normal" but your mood, cycle, or energy don't reflect that or if hormonal treatments have produced only partial improvement, there may be an environmental dimension to the picture that hasn't been examined.

A growing body of research suggests that certain common environmental chemicals can interfere with hormone signaling in ways that produce symptoms indistinguishable from hormone deficiency or imbalance, including mood changes, fatigue, anxiety, irregular cycles, and cognitive shifts. These are sometimes called endocrine-disrupting chemicals, or EDCs.

What Endocrine Disruptors Do

Endocrine-disrupting chemicals are compounds that can mimic, block, or alter hormone activity in the body. They interact with hormone receptors — including estrogen, progesterone, testosterone, and thyroid receptors — sometimes activating them inappropriately, sometimes blocking them, and sometimes altering the timing or magnitude of hormonal signals.

A review published in OBM Neurobiology (https://www.lidsen.com/journals/neurobiology/neurobiology-09-02-285) examining the mental health effects of phthalates and bisphenol A (BPA) found that these compounds present in plastics, personal care products, food packaging, and countless common items, interact with estrogen receptors in the brain and can influence neurotransmitter systems including serotonin. The hippocampus and prefrontal cortex, both involved in mood regulation, appear particularly sensitive to these disruptions.

A separate review in Frontiers in Neuroscience (https://pmc.ncbi.nlm.nih.gov/articles/PMC5187886/) examining estrogenic endocrine disruptors and brain health found that exposures to BPA, phthalates, and metalloestrogens (including arsenic, cadmium, and manganese) have been associated with anxiety, learning difficulties, memory changes, and neurological effects across the lifespan.

Xenoestrogens and Estrogen Dominance

One of the most clinically significant effects of EDC exposure in women is the contribution to estrogen dominance - a relative excess of estrogenic activity relative to progesterone. Xenoestrogens (literally "foreign estrogens") such as phthalates and BPA bind to estrogen receptors and produce estrogenic effects in the body, adding to the endogenous estrogen burden the liver must process.

For women who are already navigating hormonal sensitivity - PMS, PMDD, perimenopausal shifts, this additional estrogenic input can meaningfully amplify symptoms. And for women whose liver detoxification is impaired, the combination of endogenous and xenoestrogenic burden increases the likelihood that active estrogen metabolites will recirculate rather than be excreted.

Common Sources Worth Knowing

These exposures are not exotic or rare. They are part of everyday modern life:

• BPA and BPS in plastic food and beverage containers, particularly when heated

• Phthalates in fragrances, personal care products, and flexible plastics

• PFAS ("forever chemicals") in non-stick cookware, waterproof clothing, and food packaging

• Parabens in cosmetics and skincare

• Pesticide residues on conventionally grown produce

• Heavy metals in older plumbing, large predatory fish, and some cosmetic products

  
  

The goal is not fear, it is informed reduction of the most easily modified inputs.

Small Steps to Consider

• Transition personal care products to fragrance-free or clean-ingredient formulations, this is one of the highest-exposure reduction opportunities for most women

• Store and heat food in glass or stainless steel rather than plastic

• Prioritize organic for the most heavily sprayed produce categories

• Support liver detoxification and gut elimination, which are the primary routes for clearing EDCs from the body

• If you have significant hormonal symptoms that haven't fully responded to standard approaches, discuss environmental exposure history with a provider

A Final Thought

This is not about alarm. The goal of understanding environmental contributors is not to feel overwhelmed, it is to identify the inputs you can actually modify, reduce the ones that matter most, and support the body's own capacity to process what remains.

You don't need to eliminate everything. You need to understand what has the most impact and make sustainable, targeted changes.

My free Root Cause Health Assessment helps you map where environmental, hormonal, and metabolic patterns may be intersecting in your symptom picture.