Microplastics Are Threatening Global Food Security — Here’s Why It Matters to Us All
At Take 3 for the Sea, we’ve long warned about the risks plastic pollution in our oceans poses for marine life. But new research is revealing something even more alarming: microplastics have the potential to threaten the world’s food supply.
A recent study has found that microplastics – tiny plastic particles broken down from the plastic waste we discard – are affecting the ability of plants to photosynthesise when discarded in the environment. This is the process by which plants convert sunlight into the energy they need to grow. Without it, plants struggle to thrive. Scientists have calculated this could lead to a potential 4% -14% loss in staple crops like wheat, rice, and maize. That could leave an additional 400 million people at risk of starvation in the next two decades. In addition to blocking sunlight from reaching plant leaves, microplastics are shown to clog roots, and disrupt soil health which could contribute to declining yields of essential food crops.
Microplastics are also coating marine algae – the foundation of the ocean food web – reducing their ability to absorb CO₂ and support fish populations. It is predicted that, in the ocean, microplastics could reduce global seafood supplies by as much as 7%. That’s up to 24 million tonnes of fish and other seafood each year—enough protein to feed tens of millions of people.
Some scientists have cautioned that more data is needed to confirm the scale of these effects, and the study’s authors acknowledge that more work needs to be done. But the message is clear: action is needed. Plastic pollution isn’t just a problem for marine life. It has the potential to be a problem for everyone.
This new research comes at a time when the global population is growing, and climate change is already making food production more difficult. Yet, despite growing concern, world leaders have yet to reach a binding agreement on reducing plastic pollution, even as global plastic production has doubled in the last two decades.
What can I Do?
Reduce your plastic use: Choose reusable alternatives wherever possible. Say no to single-use plastics.
Shop consciously: Avoid products with excessive plastic packaging. Support businesses committed to finding alternatives.
Use your voice: Contact local representatives, support global treaties to curb plastic pollution, and raise awareness in your community.
And last but not least, support Take 3 for the Sea:
- Take 3 pieces of rubbish with you when you leave the beach, waterway… or anywhere
- Take 3 actions to reduce your plastic footprint
- Take 3 people on the journey with you
