Understanding Chemicals

We often hear terms like PFAS, microplastics, or BPA tossed around in conversations about health and the environment, but what do they actually mean, and why should we care? 

The world around us is made up of chemicals, defined as any substance with a specific composition (U.S. NRC, 2020). Even water (H₂O) and carbon dioxide (CO₂) are chemicals. While many chemicals are essential for human survival, others can harm our health and the environment. 

Why Are Some Chemicals Harmful? 

Chemicals impact the way our body functions. Essential substances like food, water, and air need to be in the right dosages for our bodies to thrive. When we consume too much or too little of certain substances, it can lead to health issues. An example of this is having low iron that can cause anemia and high iron that can lead to organ damage. 

Unfortunately, some man-made chemicals are uniquely harmful because of their persistence in the environment and their ability to disrupt biological systems.

Breaking Down Common Terms 

Microplastics 

Tiny plastic particles, less than 5mm in size, found in water, soil, and even the air we breathe. These particles can accumulate in our bodies, potentially affecting cellular function and health over time.

Endocrine Disruptors 

Endocrine-disrupting chemicals (EDCs) interfere with hormones like estrogen and testosterone, which regulate fertility, growth, and other vital functions. These chemicals can be found in everyday items such as plastics, personal care products, and even clothing. 

PFAS (Per- and Polyfluoroalkyl Substances) 

Often called “forever chemicals,” PFAS are used in products like waterproof clothing, nonstick pans, and stain-resistant fabrics. These chemicals are highly persistent, linked to endocrine disruption, and potentially carcinogenic. There are over 14,000 variations of PFAS, making them difficult to regulate in consumer items.

PAHs (Polycyclic Aromatic Hydrocarbons) 

Commonly released from burning fossil fuels, PAHs are harmful pollutants that can contribute to cancer and other health problems. 

BPA (Bisphenol A) 

Found in plastic containers and can linings, BPA mimics estrogen, disrupting the hormonal balance in humans and animals. 

PEG (Polyethylene Glycol) 

A common ingredient in cosmetics and pharmaceuticals, PEG can sometimes contain harmful impurities. 

Phthalates  

A group of chemicals that are used to make plastics more flexible and durable. They are also used as solvents and stabilisers in personal care products and fragrances. 

What Can We Do about harmful chemicals?

It’s easy to feel overwhelmed by the sheer volume of harmful chemicals in our everyday lives. But remember, every small step towards change makes a positive impact. You don’t need to overhaul your life overnight—incremental changes are powerful. 

Here are some actions to consider: 

1. Educate Yourself 

Learn to identify harmful chemicals in everyday items. For reliable, peer-reviewed research, explore platforms like PubMed. 

1. Recycle Responsibly 

Unsure how to dispose of items? Look into programs like Recycle Smart or local waste initiatives to dispose of plastics safely. 

1. Explore AI Tools 

AI can help you make informed choices. For instance, apps and websites can scan product ingredient lists to identify potentially harmful substances. 

Resources 

For further insights, explore the work of experts:

• Dr. Yvonne Burkart: Visit her website or YouTube channel for in-depth discussions on environmental toxins.
• Dr. Shanna Swan: Check out her research on endocrine disruptors and their impact on fertility.
• The Diary of a CEO Podcast: Listen to an informative episode on environmental toxins here.
• Dr. Andrew Huberman: Listen to the Huberman Lab Podcast for discussions on health, hormones, and how environmental factors affect brain and body function.

Final Thoughts 

Understanding the risks associated with chemicals like PFAS, BPA, and microplastics is the first step toward creating healthier environments for ourselves and future generations. Progress is about making informed decisions and encouraging others to do the same. 

Do you have questions or insights to share? Join the conversation and take the next step in protecting your health and the environment! 

Reference List 

U.S. NRC. (2020, March 19). What is a chemical? Retrieved November 25, 2024, from https://www.nrc.gov/reading-rm/basic-ref/students/science-101/what-is-a-chemical.html 

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