'microplastics have been shown to interact with a wide array of contaminants, including pesticides, persistent organic pollutants, heavy metals, and antibiotics, and may act as a vector for contaminant transfer in terrestrial environments'
'microplastic pollution might also exert deleterious effects, modifying (i) the exposure to pathogens (e.g., multi-drug resistant bacteria) & (ii) the dynamics of vector-borne diseases... potentially promoting the (re)emergence of infectious diseases'
'We also found that exposure to [Polystyrene-Nanoplastics] and [Polystyrene-Microplastics] induced oxidative stress and the development of inflammation.'
Some microplastics ‘are able to act as vectors for pathogens and are referred to as a “cocktail of contaminants” due to their association with heavy metals, plastic additives or other persistent organic pollutants'
‘The atmosphere is one of the main pathways for microplastic transport…. airborne [microplastics] should be treated as a recognized pollutant for long-term monitoring’
Plastics have ‘extraordinarily high bio-persistence’ and ‘likely high bio-persistence in the lung. Due to bio-persistence accumulation of [microplastics] in the organism, leading to chronic exposure’
Diseases like pneumoconiosis, interstitial lung disease, chronic bronchitis, and cancer of the lung and bowel might be associated with microplastics. These diseases are prevalent in exposed workers of the flocking and VC/PVC industry.
‘There are also [microplastic]-associated diseases reported in secondary organs. Interactions of human red blood cells with polystyrene [microplastics] led to blood cell aggregation and attachment to endothelial cells in vitro'
‘microplastic pollution in agricultural soils cannot be neglected. Microplastics in agricultural soils could cause unknown effects on farm ecosystems and food security’
‘After being exposed to light, combined with mechanical forces like tillage practices, they fragmented into microplastics and entered into agricultural soils’
‘Besides mulch films, compost is widely applied to improve soil fertility. The high concentration of plastics (1.20 g/kg) detected in the compost implied an important pathway for microplastics entering agricultural soils'
‘Owing to the low efficiency of removing small plastic particles in most wastewater treatment plants, large quantities of microplastics are retained in sewage sludge and wastewater'
‘from the soil samples collected in eight agricultural fields located in the east of Spain with application of sewage sludge, the amount of light and heavy density microplastics reached 2130 ± 950 items/kg and 3060 ± 1680 items/kg respectively’
‘Several studies have shown the ingestion of microplastics could decrease the growth rate and cause weight loss of earthworms, decrease the survival rate and body length of nematodes, and cause the reduction of collembolan growth’
‘Soil fauna plays an important role in maintaining soil health and biodiversity’
Microplastics ‘can be ingested by soil animals, and induce fake satiety, weak nutrition supply, oxidative stress, intestinal damages and other adverse effects.’
‘Our current opinion is that [microplastics] can mutually act with soil animals in agricultural ecosystems. The ecological & health risks of [microplastics] associated with soil ecosystems need serious considerations & further research in the future’
‘Urban dust and civil runoff could represent a critical diffuse source of MPs [microplastics] in urban areas... Several studies indicated that Tyre and Road Wear Particulates could be an important source of MPs pollution.’
Several ‘studies demonstrated that the exposition of roots to nanoplastics or particles associated with heavy metals could influence plants' mineral element absorption and distribution, reducing the nutritive value’
‘[Microplastics (MPs)] have also been detected in food and processing products like tuna. MPs can be ingested by marine organisms such as zooplankton, fish and birds’
‘We also estimated human daily intake considering the worldwide contamination of commercial fish muscle ranged from 0.016 items/g muscle of fish to 6.06 items/g muscle of fish.’
Microplastics were 'found in 56.5% of the commercial fish samples analysed... As fish is used in human food table across the world, they constitute a long-term exposure route for all humans & raise the concern about the potential public health risk'
‘In many cases, aquatic organisms mistake [microplastics (MPs)] as food, while other species may intentionally use them as food …Chemical and physical paralysis occurs if MPs are consumed by aquatic species’
‘Several studies on the effect of [microplastics] exposure among various test organisms such as crustaceans, molluscs, fish, etc., interpret the induction of physical & chemical toxicity...'
In short, “microplastics of various types of polymers, shapes and sizes are ubiquitous in humans. Hence, the possibility of health risks resulting from microplastic exposure in the human body should not be ignored.”
Shockingly, microplastics have been found in placenta tissue “a crucial interface between the fetus and the maternal environment… that can change the phenotypic expression of the individual even long after birth”
Furthermore, “No one knows exactly how much microplastic a child ingests. But several studies now suggest that today's children absorb microplastics in their bodies as early as at foetal age. This is concerning”
“Children do not have a fully developed immune system and are in a very important phase of their brain development. This makes them particularly vulnerable”
There is very much legitimate debate around potential health impacts, however plastics are being produced at an increasing rate, continuously accumulating in the environment, increasing exposure.
“we should not delay precautionary measures to combat microplastic pollution until science is ready & reaches a consensus on the toxicity of microplastics for biota & humans…”
More importantly, as others have asked: “where is the evidence that human exposure to microplastics is safe… it is clearly perilous to believe that the absence of evidence of risk translates into evidence for the absence of risk”
As with climate change, technical solutions to microplastic pollution are being proposed, though much work remains to be done, and many questions about scaling and otherwise remain.
-Microplastics present significant & growing risks for health & environment
-as with the #ClimateCrisis, the fossil fuel industry and its financiers are driving this crisis
-urgent systemic action is required.
'Global drought threatens food supplies & energy production'
From Aug 2023-Jul 2024 'Droughts, together with heat waves & warm spells, affected crop productivity in several regions of Europe, southern Africa, Central & Southern America, & Southeast Asia' phys.org/news/2024-10-g…
Farmers in the Sundarbans written off as “hapless” future climate refugees-
“Climate change-induced cyclones, floods, salinity intrusion, land degradation & riverbank erosion along the coastal blocks of Sundarbans have affected people’s livelihood”
https://t.co/uVpUUGlVCFscmp.com/week-asia/econ…
'Torrential rains swept across South Korea's farmlands in the central region last month, leaving more than 40 dead or missing, & large swaths of fields under water'
President warns 'extreme weather should be expected as the norm because of climate change' zawya.com/en/world/china…
'With extreme heat becoming a fixture of Europe's summers, the continent's food supply is becoming chronically hampered by the worsening drought. Food companies are left struggling in the face of shrinking crops and rising prices'
'China’s grain output for the year is not looking good, as the summer yield is down & more extreme weather looms... already faced rarely seen bouts of bad weather this summer, & the subsequently higher risks including drought, flooding & less plant growth' scmp.com/economy/china-…