In recent years, concern about the microplastics in the environment and the human organism It has gone from being an alarming hypothesis to a documented problem. These tiny particles, frequently smaller than five millimeters and sometimes much smaller, appear in the air, water, and food, and have been detected in various human tissues.
Science offers both hopeful and unsettling news: on the one hand, Europe debuts a non-destructive analysis method which allows them to be located in the tissue; on the other hand, there is increased evidence of biological effects, as well as scrutiny of everyday products for their potential to release particles under heat or wear.
A European breakthrough to see microplastics without damaging tissue
A team from the Faculty of Medicine at the University of Vienna has demonstrated that Optical photothermal infrared spectroscopy (OPTIR) It can identify microplastics in fixed and archived human samples (FFPE) without destroying them. This technological advancement allows for the study of the location and chemical composition of particles such as PE, PS, or PET directly in histological sections.
The approach is based on the response of the materials to infrared laserThe fabric is heated locally, generating a signal that, when read by a second light source, creates a unique infrared signature for each plastic. This preserves the cellular architecture, making it easier to correlate the presence of particles with areas of inflammation or other tissue changes in the same cut.
The team, which published its results in specialized journals, found microplastic particles in human colon tissue and demonstrated that even extremely small fractions (around 250 nanometers) can be reliably detected. The combination of chemical identification and spatial positioning represents a methodological milestone to investigate possible health effects.
Cardiovascular health: what the evidence in animal models suggests
In parallel, experimental work with mice has observed that daily exposure to microplastics A diet of 10 mg/kg of body weight administered for nine weeks can accelerate the development of atherosclerosis in males, without the same effect being replicated in females of the same model. The finding occurred with lean animals and without high-fat diets.
The authors did not record an increase in cholesterol or obesity, but rather changes in the endothelial cells that line the vessels, a mechanism consistent with increased inflammation and plaque buildup. Although this is preclinical research, it points to clear hypotheses about differential effects by sex which will need to be confirmed in humans.
Containers and bottles: heat, wear and tear and particle release
Public attention to bottled water and the reuse of containers has put the spotlight on when microplastics are releasedThe strongest evidence indicates that high temperature, visible deterioration, and type of material are the determining factors, rather than simply refilling a bottle.
Some comparative studies published in the last decade suggest that, in normal and cold operating conditionsThe migration of compounds may be very low or undetectable. However, exposure of the packaging to extreme heat or a high degree of wear Yes, it can increase the release of particles.
To minimize risks associated with microplastics, it is advisable to follow simple guidelinesbased on what studies have already observed:
- Avoid very hot liquids in containers not designed for them.
- Replace containers with cracks, scratches or deformations.
- Prefer stable materials for high temperature applications.
Air fryers and food contact materials
The rise in popularity of air fryers has raised questions about non-stick coatings and plastics exposed to intense heatWhen these materials overheat or deteriorate, they can release particles, including plastic fractions, as well as other potentially problematic compounds if they contain certain fluorinated substances.
Given this scenario, specialists recommend prioritizing baskets or accessories made of high-strength glass, stainless steel or ceramic Guaranteed to be PFAS-free for high-temperature applications. This isn't a matter of fashion, but of thermal and chemical stability in contact with food, especially when cooked at high temperatures.
From stadiums to regulations: Europe makes its move
European regulations are progressing to reduce the release of plastic particles into the environment, with particular attention to diffuse sources such as granular infill for artificial turfThe transition periods give municipalities and clubs time to adapt with alternative materials.
In Spain there are already practical examples: a Valencian council has renewed the grass on its fields allocating more than €300.000 and incorporating a microplastic-free filler made from biomaterials. In addition to aligning with the future ban on the sale of these granules, the aim is reduce diffuse emissions in heavily used sports facilities.
Signals from the field: working animals and the food chain
It's not just the marine environment that's under pressure. In an archipelago in Kenya, a multidisciplinary study found microplastics in 100% of feces Samples were taken from donkeys and cows. The lack of food and the presence of plastic waste favor accidental ingestion, with documented veterinary consequences.
The report warns of a possible transfer of particles from manure to agricultural soil and, by extension, to crops. Although the context is African, the interpretation is global: waste management, the cleanup of critical areas, and the deployment of alternatives Measures to address problematic plastics have a direct impact on animal, human, and environmental health.
Reducing exposure at home: realistic measures
Many everyday gestures help to reduce exposure: Do not heat food in plastic.Use glass, ceramic or steel for oven and microwave, and avoid deteriorated or damaged coating accessories in contact with food.
In purchasing and storage, it is advisable prioritize less packagingSafely reuse and extend the lifespan of suitable items. A more critical selection of materials and care for household items reduce the generation and potential ingestion of microplastics without complicating your daily routine.
With research that improves detection in human tissue, biological signals in animal models and European regulations that are already changing practices In sports facilities, the debate about microplastics is no longer abstract. Public decisions and consumer choices are all pointing in the same direction: reducing emissions and exposure while science clarifies risks and priorities.
