Are Microplastics in Breast Milk Harmful to Infants?

     Breast milk continues to be the best source of nutrition for infants. However, a recent study conducted by a team of Thai researchers revealed that microplastics were detected in the breast milk of up to 38.98% of a sample group consisting of 59 postpartum Thai women, with an average age of approximately 28 years. It is presumed that these microplastics may enter the body through daily lifestyle habits.

What Are Microplastics?

     Microplastics are extremely small plastic particles, often invisible to the naked eye. They typically result from the degradation of larger plastic materials due to heat, friction, or natural decomposition. Common sources of microplastics in everyday life include water bottles, food containers, plastic bags, clothing, cosmetics, and even seafood harvested from natural environments.

Did You Know? We May Be "Consuming Plastic" Equivalent to One Credit Card Per Week?

     It is estimated that the average human body may ingest up to 5 grams of microplastics per week, amounting to approximately 240 grams annually, equivalent to the weight of one credit card each week. Types of plastic commonly detected in the human body include polypropylene (PP), polyethylene (PE), and polyvinyl chloride (PVC), which typically originate from food containers, baby bottles, and plastic bags.

Do Microplastics Affect Infants?

     While there is currently no definitive conclusion on the long-term health impacts of microplastics within the human body, animal studies suggest that certain microplastics can damage vascular tissues, affect the cardiovascular system, increase the risk of cancer, and disrupt hormonal functions and physical development, particularly in children under the age of five.

Can Microplastics Be Eliminated from the Body?

     Most microplastics can be expelled from the body through the digestive system. However, particularly small particles may remain in the body and pose long-term health risks. Of particular concern is Bisphenol A (BPA), a chemical that may leach from plastic containers and disrupt the body's hormonal system.

Breast Milk Remains the Best Nutrition, Despite the Detection of Microplastics

Despite the detection of microplastics in breast milk, mothers are strongly encouraged to continue breastfeeding, as breast milk remains the most beneficial source of nutrition and immunity for newborns. Nonetheless, for greater safety, mothers should take steps to minimize the intake of microplastics through the following practices:

• Avoid using plastic containers to heat food
• Opt for glass or stainless steel containers
• Limit the use of plastic bags and plastic packaging
• Avoid processed foods and consume more fresh, natural foods

Conclusion

     Although microplastics have been found in breast milk, there is currently no clear evidence indicating direct harm to infants. However, maintaining awareness of health and minimizing exposure to sources of microplastics in daily life are important strategies for effectively reducing long-term health risks.