Figure 2: Visualization of suspected plastic particles detected in brain tissue [13].

 Overall effects of microplastics on brain

Recent research suggests that microplastics may have several potential effects on brain health, although the evidence in humans is still developing [7], [14]. Once these particles reach neural tissue, they may trigger neuroinflammatory responses, where immune activity in the brain becomes elevated and may contribute to cellular stress or damage [7]. In addition, microplastics have been associated with oxidative stress, which occurs when the production of reactive oxygen species exceeds the body’s ability to neutralise them, potentially leading to damage in neurons and surrounding brain structures [7]. Experimental studies also indicate possible neuronal toxicity caused by microplastics, including interference with synaptic communication and normal nerve cell function [7], [14]. These mechanisms are particularly concerning because neuroinflammation, oxidative stress, and neuronal toxicity are already known to be involved in the progression of neurodegenerative diseases such as Alzheimer’s disease and Parkinson’s disease [7], [14].

 Although it is important to note that most current evidence is derived from experimental models and the long-term neurological impact of microplastic exposure in humans remains uncertain, the increasing environmental accumulation of plastic waste raises potential concerns for overall human health and well-being. Continued research is therefore needed to better understand the extent of microplastic exposure, its biological effects, and its possible implications for neurological and systemic health [3]. While definitive conclusions cannot yet be drawn, the routine and often unconscious use of plastic products for convenience may carry hidden costs, not only in terms of environmental degradation but also potential risks to human health. This highlights the importance of increasing awareness and adopting more sustainable consumption practices to reduce reliance on single-use plastics.

Sustainable View: Actions for Students and Universities

The environmental and potential health impacts of the plastic products we use daily should be a significant concern, and this article highlights the importance of adopting a sustainability-focused approach in both perception and practice. 

At the student level, meaningful change can be achieved through consistent adoption of low-waste behaviours, including reducing reliance on single-use plastics, choosing reusable alternatives, and actively participating in campus recycling and waste separation systems. In addition, involvement in sustainability clubs, volunteer programmes, and environmental campaigns can increase awareness and promote behavioural change within the wider student community. Studies show that active engagement and sustainability-focused education can significantly improve environmental awareness and encourage long-term behavioural change among students [15].

Universities play a central role in advancing sustainability due to their position as both knowledge producers and influential institutions. One key action is the implementation of circular economy principles within campus operations [16]. This includes reducing single-use plastics in cafeterias, events, and administrative activities, and replacing them with reusable alternatives. Research highlights that universities worldwide are already adopting circular strategies such as reuse systems, improved recycling infrastructure, and stakeholder engagement programmes to reduce plastic waste generation [16]. In addition, universities can integrate sustainability into procurement policies by prioritising suppliers that minimise plastic packaging and adopt environmentally responsible practices.

Beyond operational changes, universities also contribute through education and research. Integrating sustainability education across disciplines helps embed environmental awareness more broadly, while research into alternative materials, microplastic pollution, and waste management technologies contributes to long-term solutions. Furthermore, educational initiatives and awareness campaigns play an important role in addressing plastic pollution at all levels of society [17].

Overall, achieving sustainability in relation to plastic waste requires coordinated action at multiple levels. While universities provide the structural and educational framework, students play a crucial role in driving behavioural change. Together, these efforts support a transition toward a more sustainable and circular approach to plastic use, reducing environmental impact and contributing to long-term ecological and societal well-being. From a broader perspective, this transition is supported by circular economy principles that aim to minimise waste generation and keep materials in use for as long as possible.