The water you drink today contains more than just water. A growing body of research reveals that microplastics have quietly infiltrated our lives and bodies—from bottled water and tap water to chewing gum. These invisible particles pose a potential threat to health, but what can we do? Recent studies confirm that one simple, additional step can significantly reduce the risk of ingesting microplastics.
The presence of microplastics in drinking water is a primary concern for experts. Studies show that a single 500-ml bottle of water can contain up to 100,000 microplastic particles, mostly nano-sized particles invisible to the naked eye.
It’s not just bottled water; tap water in many countries has also been found to contain microplastics, prompting some developed nations to begin legislating limits and monitoring concentrations. Notably, research indicates that populations in Asia and Africa ingest the highest global levels of microplastics via tap water. Even everyday activities like chewing gum can lead to swallowing dozens of microplastic particles.
The Extra Step That Removes Up to 90% of Microplastics
While we wait for broader improvements in water quality, how can we protect ourselves? According to research from Guangzhou Medical University in China, boiling water and then allowing it to cool or filtering it can effectively remove a significant portion of microplastics, with removal rates reaching up to 90%. This practice is familiar in many Taiwanese households, where boiling water before drinking is common; now there’s a concrete health reason to support this habit.
Why is boiling so effective? When water is heated to its boiling point, calcium carbonate in the water crystallizes, forming the white scale often seen in kettles. As these crystals precipitate, they encapsulate microplastic particles and carry them down to the bottom of the container. This scale, once settled at the bottom, traps the microplastics, preventing them from being consumed.
If you add an extra step after boiling—such as using a water filter to remove the sediment—you can further ensure these plastic residues are “trapped,” reducing the absorption risk even more.
The study also found that the effectiveness of this method increases with water hardness:
Soft water: Removes about 25% of microplastics.
Water hardness of 180 mg/L: Removal rate increases to 84%.
Water hardness of 300 mg/L: Can remove nearly 90% of microplastics.
Beyond boiling, households with reverse osmosis systems or filters specifically designed to remove microplastics can combine these methods for even greater effect. However, even without expensive equipment, simply adopting the “boil + settle/filter” routine offers substantial daily protection. A practical tip is to boil water before bed, let it cool overnight, and drink it the next day, significantly reducing the chance of swallowing microplastics.
Why Is This Precaution So Necessary? Microplastics Are Stealthily Entering the Human Body
The need for such vigilance stems from the fact that microplastics are now ubiquitous, entering our bodies through daily activities like drinking, eating, and even breathing. Research indicates they can increase inflammation, oxidative stress, cholesterol, and blood sugar levels, and may also elevate blood pressure, thereby accelerating the risk of arteriosclerosis and other cardiovascular diseases.
It’s not just the cardiovascular system. Cell and animal studies have found that microplastics accumulate in organs like the lungs, liver, and kidneys, potentially disrupt gut microbiota, and even exhibit neurotoxicity. Alarmingly, recent studies have detected microplastics in human blood, placenta, breast milk, lungs, and even the brain and semen.
Disclaimer: This information is for educational purposes only and is not a substitute for professional medical or environmental health advice. Always consult with relevant experts for concerns regarding water quality and personal health.