Endocrine disruptors: definition, effects and advice to avoid them

Invisible to the naked eye yet terribly harmful, endocrine disruptors are everywhere: they sneak into our bathroom, appear in our makeup bag, settle on our furniture and even our walls, are present in our Tupperware, and even reach the cribs of our little ones…

Endocrine disruptors are all those insidious chemical substances capable of interfering in one way or another with our hormonal system (that is, our endocrine system), even at tiny doses. Some are banned, others regulated, and some are widely suspected without clear regulation, limitation, or prohibition…

So, how do you navigate this? How do you become aware, identify, analyze, and gradually eliminate these dangerous products from your daily life and environment?

In this article, we guide you through this process to:

• Understand what an endocrine disruptor is.
• Identify the concrete risks for your health and that of your loved ones.
• Discover why they are still found in so many cosmetic products.
• Review current regulations.
• Learn to identify and avoid them.

 

 

What is an endocrine disruptor?

 

What is the endocrine system?

Before even talking about endocrine disruptors, it is good to have a clear overall understanding of what is called the endocrine system: also known as the hormonal system, it is somewhat like the central clock of our body. It works through a network of glands (thyroid, pituitary, ovaries, testicles, etc.), which secrete hormones. These messengers circulate throughout the body to regulate vital functions such as growth, reproduction, metabolism, sleep, and mood.

Everything is finely orchestrated: the interactions are numerous and complex, and also depend on other elements: the liver, intestines, brain, stress, diet, environment… When this system is disrupted by external factors, everything can become unsynchronized, leading to a cascade of various symptoms. This is essentially what endocrine disruptors do.

Note: In people with chronic hormonal diseases such as PCOS (polycystic ovary syndrome), hypothyroidism, or certain forms of endometriosis, repeated exposure to endocrine disruptors can worsen symptoms or complicate treatments. These profiles are therefore even more encouraged to limit their exposure.

 

So then, what is an endocrine disruptor?

Endocrine disruptors are chemical substances capable of influencing the endocrine system by:

• mimicking certain natural hormones (an “impostor” effect);
• blocking their action (an “antagonist” effect);
• or disrupting their production, transport, or elimination.

A tiny dose can have noticeable effects on the endocrine system. We can easily imagine the repercussions when we accumulate our exposure throughout the day, every day.

This is the real problem: even though regulations exist and are regularly reviewed, they do not take into account people’s overall exposure and this accumulation. This is called the cocktail effect: a little here, a little there… and ultimately, a chronic exposure with very real consequences.

 

Where are endocrine disruptors hiding?

As mentioned in the introduction, endocrine disruptors are everywhere:

• In cosmetic products: creams, deodorants, makeup, perfumes…
• In hygiene products: toothpastes, shampoos, shower gels, wipes, feminine hygiene products.
• In household products: disinfectants, multi-purpose sprays, window cleaners…
• In food plastics: storage containers, cling films, bottles, lids, packaging.
• In kitchen utensils: non-stick pans, spatulas, old baby bottles…
• In textiles: clothing, curtains, sofas, carpets (especially stain-resistant or flame-retardant treatments).
• In furniture and mattresses: glues, varnishes, foams, flame retardants.
• In toys and children's items: soft plastics, paints, inks… a reality that invites better understanding of their effects on children.
• In building materials and paints: solvents, glues, wall coverings.
• In tap water (residues of pesticides or medicines).
• In certain foods (pesticides, migration from packaging…): this is the whole issue of endocrine disruptors in food.
• In electronic products: computers, phones, televisions (via flame retardants).
• In thermal receipts (bisphenol A or S).
• In pharmaceutical products (certain hormone treatments or medication residues in the environment).
• In the air…

Here are some concrete examples of commonly encountered endocrine disruptors:

• Parabens: preservatives used in creams, deodorants, shower gels.
• Phthalates: fragrance fixatives often hidden under the terms “fragrance” or “perfume.”
• Bisphenol A (or S): food-grade plastic, receipts.
• Triclosan, BHA, BHT: disinfectants or antioxidants in toothpastes, facial care, etc.
• Chemical UV filters: found in sunscreens.

And these are just a few examples!

Discover our article on dangerous cosmetic products, which include endocrine disruptors, but also carcinogens and allergens – which it is essential to clearly distinguish from endocrine disruptors.

The additional problem is that, while cosmetics have a regulated ingredient list, most other everyday products are not required to display their chemical composition.

No "ingredients" label on furniture, paint, or a sofa, and no visible warning on products containing flame retardants or solvents. The result: a large part of our exposure happens blindly, without the possibility of informed control.

It is therefore very difficult to assess our actual exposure; a good reason to get informed and initially eliminate all those that are "visible," such as in cosmetics or cleaning products.

Note: There are laboratory tests to determine the amount of endocrine disruptors stored in our bodies. This involves a blood test that can be requested without a prescription and will then be done at your own expense.

 

 

Measuring health risks

As we have just seen, the presence of endocrine disruptors in our bodies is virtually unavoidable: they are everywhere, and we come into contact with them daily. At this stage, it becomes essential to know how the body can eliminate them and which habits support this natural detoxification of endocrine disruptors.

We “collect” them in many ways, and they interact with our endocrine system in several harmful ways.

 

How do endocrine disruptors enter our body?

• Through ingestion: When eating or drinking contaminated foods:
  • fruits/vegetables with pesticide residues,
  • foods that have been in contact with plastic (bisphenol A, phthalates),
  • water containing drug or chemical residues.
    
    
• Through inhalation: By breathing particles or vapors:
  • emissions from household products,
  • volatile pollutants in indoor air (varnishes, glues, paints),
  • household dust containing flame retardants or plasticizers.
    
    
• Through skin contact: By applying on the skin or touching contaminated surfaces:
  • cosmetics (creams, makeup, shampoos),
  • detergents or household products handled without gloves,
  • treated textiles or furniture (stain-resistant, flame-retardant, etc.).
    
    
• Through the placenta: Some disruptors cross the placenta during pregnancy, exposing the fetus in utero.
  
  
• Through breastfeeding: Liposoluble endocrine disruptors (stored in fats) can pass into breast milk.

 

How do endocrine disruptors influence our hormonal system?

Hormones are like keys circulating in the blood to open or close certain body functions: growth, reproduction, sleep, metabolism… It’s a whole system of codes and receptors, where each hormone plays a key role.

Endocrine disruptors are imitators, blockers, or saboteurs:

• They take the place of a real hormone (like a fake badge that deceives a doorman).
• Or they prevent the correct hormone from binding where it needs to act.
• Sometimes, they alter hormone production itself, making it too high or too low.

No matter their exact behavior, as soon as a molecule affects the normal behavior of a hormone and the endocrine system, it is classified as an endocrine disruptor.

Vital functions regulated by hormones are disrupted, and the consequences can be very serious, especially during key developmental periods (fetus, early childhood, adolescence).

Good to know: Exposure to endocrine disruptors during pregnancy can influence the biological sex of the fetus, alter brain formation, or even impact the child's future behavior.

 

What are the effects on human health?

Endocrine disruptors can therefore:

• Impair fertility

  By disrupting the production or quality of eggs and sperm, or by confusing the signals necessary for ovulation or embryo implantation. These mechanisms are now well documented and explain the close link between endocrine disruptors and fertility, in both women and men.

  This leads to difficulties conceiving, an increased risk of miscarriage, or more frequent use of medically assisted reproduction.

• Cause thyroid disorders

  The thyroid is a gland extremely sensitive to hormonal interference. A disruptor can cause it to speed up or slow down its activity.

  This can manifest as chronic fatigue, unexplained weight gain or loss, sensitivity to cold or heat, sleep disturbances, concentration issues, or even mood changes.

• Accelerate puberty

  Some disruptors mimic estrogens, which can trigger early puberty, especially in girls.

  An abnormal appearance of puberty signs before 8–9 years old is then observed (too early onset of menstruation, breast development or hair growth before the normal age), with both physical and emotional impact on the child.

• Promote certain cancers

  So-called "hormone-dependent" cancers. When a disruptor abnormally stimulates a hormone receptor, it can promote the growth of cells already sensitive to these signals. Men are also affected by the effects of endocrine disruptors, with an increased risk of prostate or testicular cancers, while in women, breast or ovarian cancers are more likely to be involved.
  

  This can promote the multiplication of cancer cells, a faster progression of the disease, or even reduced effectiveness of certain hormonal treatments. In cases of predisposition (hormone-dependent cancers in the family, for example), it is all the more important to address the issue of endocrine disruptors and avoid them as much as possible.

• Affect fetal development

  In the unborn baby, the hormonal system is still developing. The brain, reproductive organs, metabolism: everything is developing during pregnancy and the first years of life. Early exposure can therefore have lasting consequences, even into adulthood.

  Risks include malformations, developmental delays (language, attention…), abnormalities in sexual differentiation, cognitive or behavioral disorders detected later in childhood…

 

Note: The WHO (World Health Organization) considers exposure to endocrine disruptors a major threat to public health worldwide.

 

Endocrine disruptors affect our health, but not only that: they are also harmful to the environment and biodiversity, impacting both terrestrial and aquatic ecosystems.

 

What is the current regulation?

One might imagine that given the health risks, endocrine disruptors would be strictly regulated or even banned. Yet... the regulation remains very incomplete.

Existing measures vary greatly depending on countries, sectors, and substances involved. As a result, it is still possible to encounter recognized disruptors in products we use every day.

 

In Europe, a framework that is progressing slowly

The European Union has implemented several texts to regulate chemical substances, notably:

• The Regulation (EC) No 1223/2009 on cosmetics, which bans certain substances classified as hazardous.
• The REACH regulation, which requires registration and evaluation of many chemical substances, with a precautionary principle.
• The biocidal products directive or the toys directive, which sometimes mention disruptive substances.

But these texts face several limitations:

• Not all endocrine disruptors are officially identified or recognized in regulatory lists yet.
• Assessments are done substance by substance, while the cocktail effect — that is, the combination of several disruptors — is not taken into account.
• Some substances are only restricted, but not completely banned.

 

Internationally: significant disparities

In the United States, Canada, Japan, or elsewhere, regulations vary greatly. Some substances banned in Europe may be allowed elsewhere, and vice versa. Responsibility for safety often lies with manufacturers, which complicates transparency for consumers.

 

And in cosmetics?

The cosmetic sector is one of the most monitored, but that doesn’t mean it’s free of problematic substances. Many suspected endocrine disruptors are still used in care products, including:

• UV filters in sunscreens,
• preservatives (like phenoxyethanol or certain parabens),
• perfumes containing phthalates, often hidden under the generic term "perfume."

Want to know more? Check out our dedicated article: Regulations on endocrine disruptors: understanding and complying for a detailed view on this topic.

 

 

How to hunt endocrine disruptors?

Hunting endocrine disruptors doesn’t mean living in fear or replacing your entire home overnight!

It’s above all about opening your eyes, making more informed choices, and gradually taking back control over what you apply, breathe, or consume daily. Here are the first habits to adopt to gradually reduce your exposure.

 

1. Learn to spot them

The first step is knowing where to look and what to track. And it starts with three good habits.

Read the labels (INCI)

Cosmetic products display a complete list of their ingredients, called the INCI list. But you still need to understand the often complex names. Some endocrine disruptors are clearly identifiable: parabens, phenoxyethanol, triclosan, cyclopentasiloxane, etc. Others are hidden under vague terms like "perfume" or "fragrance."

Use analysis apps

To save time (or start without stress), some apps like INCI Beauty, Yuka, or QuelCosmetic allow you to scan your products and spot ingredients to avoid.

It’s not perfect, but it’s a good starting point. By using them regularly, you become familiar with product names and their associated dangers.

Trust the right labels

Not all labels guarantee the absence of endocrine disruptors. However, some labels are true marks of trust. For example:

• Cosmébio,
• COSMOS,
• Nature & Progrès…

To learn more about the best labels guaranteeing the absence of endocrine disruptors, check out our article and deepen the subject.

 

2. Simplify your routine: less but better

No need for 12 products to take care of yourself. Lightening your routine is often an opportunity to eliminate disruptors… without realizing it.

• Choose short and clear formulas (fewer ingredients = less risk).
• Avoid duplicates: a well-chosen vegetable oil can replace a serum, a night cream, and an eye contour cream.
• Turn to multifunctional basics: Aleppo soap, jojoba oil, clay, aloe vera…

 

3. Hunt piece by piece

Rather than trying to change everything, it’s better to move forward piece by piece, starting with the easiest products to replace and the most exposed.

• If you don’t have the heart to throw them away, finish your products, then replace them one by one, making more informed choices. During this time, you can do some research, compare prices, evaluate labels…
• Start with the simplest, most daily, most accessible.
• And remember: every small change counts.

In the bathroom

• Deodorant, toothpaste, moisturizer, makeup, sanitary products: these are the products most directly absorbed by the skin or mucous membranes.
• Start with those you use every day.

To learn more: Cosmetics: how to avoid endocrine disruptors to protect your health

In the kitchen

• Replace plastic containers with glass or stainless steel.
• Avoid plastic wrap, and steer clear of questionable utensils (scratched pans, plastic spatulas).
• Prefer simple or homemade cleaning products (vinegar, baking soda, black soap…).

In the bedroom and living room

• Ventilate regularly: chemical particles accumulate in dust.
• Limit or eliminate scented candles, air sprays, incense…
• In the long term, you can favor untreated furniture, or certified free of toxic solvents.

 

In short, hunt with intention, but without pressure. You will never eliminate all endocrine disruptors from your environment. But you can greatly reduce their impact by making conscious and committed choices.

• Start with what touches your skin.
• Rely on reliable benchmarks, not marketing promises.
• And move at your own pace, with full awareness.