Summary of "Ano ang epekto ng microplastics sa kalusugan? | Need to Know"
Scientific Concepts and Discoveries on Microplastics and Health
Plastic Production and Decomposition
- Over 430 million tons of plastic are produced globally each year.
- In the Philippines, nearly 200 million shampoo sachets are produced annually.
- Plastics take 20 to 500 years to decompose but gradually disintegrate into smaller particles over time.
Types of Plastics
- Macroplastics: Large plastics visible to the naked eye (e.g., plastic bags).
- Microplastics: Tiny plastics, almost invisible, that result from:
- Primary microplastics: Manufactured to be small (e.g., microbeads in facial washes and skincare products).
- Secondary microplastics: Result from the breakdown of macroplastics due to environmental factors like UV exposure.
Sources and Pathways of Microplastics
- Breakdown of larger plastics by sunlight (UV radiation) and environmental exposure.
- Synthetic clothing fibers (polyester, nylon, polyamide, acrylic) shed microplastics during laundry, which enter waterways and eventually the ocean.
- Over two million tons of microfibers enter the sea annually.
- Microplastics are found in marine products and sea salt, particularly in coastal areas where salt is produced from seawater.
Environmental Impact
- Microplastics affect marine life health and reproduction, including fish, oysters, and mussels.
- Studies show microplastics contamination in salt samples worldwide; for example, 16 out of 17 samples in a 2017 study contained microplastics.
Human Exposure
Microplastics enter the human body through:
- Consumption of contaminated seafood and salt.
- Inhalation of microplastics suspended in the air, especially in urban areas with high plastic waste.
Microplastics are small enough to penetrate respiratory and gastrointestinal tracts.
Health Risks
- Plastics contain thousands of chemicals (about 13,000), with around 3,200 hazardous to human health.
- Microplastics can carry bacteria, viruses, and toxic substances like heavy metals.
- Chemical exposure from microplastics may cause:
- Physical damage to tissues.
- Toxic effects including neurological damage and endocrine disruption.
- Developmental effects and reduced fertility, particularly in females.
- Studies have detected microplastic particles in human blood.
Current Research and Concerns
- Ongoing studies continue to investigate microplastic impacts on human health.
- There is a high likelihood of daily ingestion of microplastics, especially from food containers and take-out packaging.
- The sea acts as a “sink” for plastic pollution, accumulating microplastics from land-based sources.
Mitigation Strategies
- Reducing plastic use (“turning off the tap”) is essential to decrease microplastic generation.
- Minimizing plastic consumption will reduce environmental contamination and health risks associated with microplastics.
Researchers and Sources Featured
- Dr. Deo Onda – Microbial oceanographer, University of the Philippines
- Department of Health (DOH), Philippines
- Mindanao State University Iligan – Study on microplastics in air in Metro Manila
- United Nations Environment Program (UNEP)
- Environment International Journal (2022 study)
- Collaborative research from experts in France, the United Kingdom, and Malaysia (2017 salt contamination study)
Category
Science and Nature
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