Microplastics, which are tiny plastic particles smaller than a grain of sand, have become a growing concern due to their widespread presence in the environment and potential health risks. These particles are often added to products as thickeners or exfoliants but mainly result from the breakdown of larger plastic items through wear and tear.
Estimates suggest that between 10 and 40 metric tons of microplastics enter the environment each year. Researchers have detected them in remote locations such as Antarctica’s fresh snowfall, cloud vapor around Mt. Everest, and even the Mariana Trench. Microplastics have also been found in meconium, the first bowel movement of newborn infants.
Unlike natural materials, plastics do not biodegrade; instead, they fragment into increasingly smaller pieces. This process allows microplastics to be ingested, inhaled, or absorbed through the skin. Due to their minute size—sometimes mere nanometers—they can penetrate cell membranes, enter the bloodstream, and cross the blood-brain barrier. This is a key difference compared to larger airborne particles like dust or pollen.
Chemicals within microplastics may accumulate in body tissues and cause various bioactive effects such as inflammation, changes in hormone interactions, immune response disruption, gut microbiome alterations, and physical damage. Microplastics can also bond with heavy metals and other persistent chemicals before entering the body.
To reduce exposure at home, experts recommend avoiding single-use water bottles and food containers made from plastic since these can shed microplastics into food and drinks as well as contribute significantly to environmental pollution when discarded. Bringing non-plastic cups for beverages can further minimize risk since many disposable cups are lined with plastic.
Plastic bags and wraps used for food storage may transfer microplastics into foods; using alternatives like stainless steel or microwave-safe glass containers is suggested. Heating food with plastic wrap should be avoided because it causes chemicals to leach out.
Opting for fresh or unprocessed foods lower on the food chain may help limit ingestion of microplastics. Clothing made from synthetic fabrics releases these particles during wear and washing; choosing natural fibers such as cotton or wool is recommended where possible.
The United States Environmental Protection Agency provides resources about products free from microplastics at www.epa.gov/saferchoice.
“Some of these particles are added to a wide range of products to act as thickeners or exfoliants, or to add structure and texture. However, the majority enter the environment when products made with plastic undergo wear and tear.”
“It is estimated that between 10 and 40 metric tons of these miniscule pollutants are released into the environment each year.”
“Researchers have found microplastics in fresh snowfall in Antarctica, in the cloud vapor around Mt. Everest and in the Mariana Trench — the deepest region of the ocean we know.”
“They have even been found in meconium, which is the first bowel movement of a newborn infant.”
“Unlike natural materials, plastics do not decompose or degrade. Instead they split break shatter and then crumble into ever-smaller particles.”
“These particles become small enough to be swallowed inhaled or absorbed through the skin.”
“They are also able to penetrate cell membranes enter the bloodstream and even cross the blood-brain barrier.”
“This is due to their chemical properties and their minute size — often mere nanometers — which is far smaller than dust or pollen you asked about.”
“The chemicals contained in microplastics have been shown to accumulate in bodily tissues.”
“This can lead to bioactive effects including causing inflammation changing hormone interactions altering immune response disrupting gut microbiome and causing physical damage.”
“Microplastics also easily bond to heavy metals endocrine disruptors and so-called forever chemicals,and they can carry them into body”
“To start reducing microplastics around you avoid single-use water bottles & food containers.They not only shed microplastic into contents but become major source environmental pollutants when discarded.Even coffee shop cups lined w/plastic bringing non-plastic cup reduces exposure”
“Many rely on plastic bags/wraps for food storage;these transfer microparticles.Don’t use wrap microwave this causes chemicals leach out”
“You might consider investing good water filter,in stainless steel/microwave-safe glass containers for storage.Speaking food,fewer microparticles fresh/unprocessed foods those sit lower chain”
“Our clothes–many contain synthetic fabrics–shed microparticles opt natural fabrics shopping,cotton linen wool”
“The United States Environmental Protection Agency is good resource guidance about products free microparticles,www.epa.gov/saferchoice.And remember any change easiest undertake increments”
“If any readers have suggestions let us know.We would love hear share them.”
(Send your questions [email protected],or write: Ask Doctors,c/o UCLA Health Sciences Media Relations 10960 Wilshire Blvd Suite 1955 Los Angeles CA 90024.Owing volume mail personal replies cannot provided.)
Learn more talk provider.
See doctor virtually/in-person easy online booking options.
