What We Know About Endocrine Disruptor Chemicals
Understanding the Basics
Endocrine disruptors are chemicals found in a variety of everyday products, including food. They have the ability to mimic hormones and alter their activity, which can lead to numerous biological effects. While it is well-established that these chemicals have harmful effects on animals, their impact on human health remains less understood.
The endocrine system regulates numerous bodily functions through hormone production. For instance, the pancreas produces hormones that control digestion and blood sugar levels. Similarly, hormones generated by the adrenal gland influence metabolism and blood pressure. Other functions regulated by hormones include mood, sleep, and reproduction.
Endocrine disruptor chemicals can interfere with hormone levels in the body, either increasing or decreasing their activity. They may also mimic hormones, producing similar effects, or alter the quantity of hormones the body produces. These disruptions can lead to various health issues.
Sources of Endocrine Disruptors
Endocrine disruptors are present in numerous products, such as:
– Plastics
– Electrical equipment
– Cosmetics
– Medical devices
– Pesticides
– Food
Consequently, individuals may be exposed to these chemicals through direct contact, inhalation, or ingestion.
Endocrine Disruptor List
The National Institute of Environmental Health Sciences (NIEHS) has identified a range of common endocrine disruptors, which include both naturally occurring and synthetic substances. This article will examine the following endocrine disruptors in detail:
– Bisphenol A (BPA)
– Dioxins
– Perfluoroalkyl and Polyfluoroalkyl Substances (PFAS)
Bisphenol A (BPA)
Bisphenol A (BPA) is a chemical commonly found in various plastics, such as water bottles and the linings of canned foods. People typically encounter BPA by consuming contaminated food and beverages, as it leaches from containers. BPA has also been detected in breast milk.
The Centers for Disease Control and Prevention (CDC) conducted the National Health and Nutrition Examination Survey (NHANES III) from 2003 to 2004, which revealed BPA in 93% of urine samples collected from individuals aged six and older. Animal studies have indicated that BPA can adversely affect fetuses and infants, with the potential for significant impacts on younger children. To reduce BPA exposure, individuals can:
– Avoid microwaving food in containers made of polycarbonate plastic (identified by recycling codes 3 or 7)
– Refrain from storing hot food or beverages in plastic containers
– Limit consumption of canned foods
– Use BPA-free bottles for infants
Dioxins
Dioxins are released into the atmosphere during waste incineration, forest fires, and volcanic eruptions. Since 1987, dioxin production has decreased by 90% due to stringent regulations. However, dioxins remain a concern because they are slow to break down and continue to impact health today. Most exposure occurs through the consumption of contaminated animal products, as dioxins accumulate in fatty tissues.
Research indicates that dioxins can disrupt gene function, potentially leading to various health effects. Dioxins are known carcinogens and are linked to conditions such as type 2 diabetes, heart disease, developmental issues in children, and infertility.
Perfluoroalkyl and Polyfluoroalkyl Substances (PFAS)
PFAS are synthetic chemicals found in numerous products, including carpets, clothing, cooking equipment, and food packaging. These substances can leach into the environment and are resistant to degradation. Exposure to PFAS can occur through contaminated food and water, as well as direct contact and inhalation.
With over 9,000 known PFAS, extensive research is necessary to understand their effects on human health. The NIEHS is actively investigating how PFAS impact health and is funding studies aimed at reducing exposure. Preliminary findings suggest that PFAS may influence metabolism, fertility, fetal growth, and weight, while also compromising the immune system and increasing cancer risk.
Where Do We Go From Here?
Current evidence indicates that exposure to endocrine disruptor chemicals can negatively impact health. Researchers continue to explore these effects and develop strategies to minimize exposure. In the interim, educating oneself and choosing products devoid of endocrine disruptors can help mitigate potential health risks.