By Remya Sanjith

In India, chai in a paper cup is almost a daily ritual — whether during travel, meetings, or roadside stops. At the same time, online food delivery has become a part of modern life, bringing meals packaged in black plastic containers.
But recent research shows that both these conveniences may be quietly contributing to microplastic exposure — tiny plastic particles that can enter your food and ultimately your body.
Let’s explore how this happens and why it matters.
🧴 What Are Microplastics?
Microplastics are plastic fragments smaller than 5 millimeters. They result from:
Breakdown of larger plastic pieces
Plastic surfaces exposed to heat
Plastic container degradation
These tiny particles are now being found in the air we breathe, the water we drink, and — importantly — the food we consume.

☕ Paper Tea Cups: More Than Just Paper
A recent study from the Indian Institute of Technology Kharagpur found that:
Disposable paper cups used for hot tea or coffee are lined internally with thin plastic (usually polyethylene).
When hot beverages (around 85–90°C) are poured into these cups, plastic particles can begin to shed within 15 minutes.
The study observed that up to 25,000 microplastic particles could be released into the beverage in that short period.
This is concerning because most of us drink hot chai daily from such cups, especially while out or at work.
How It Happens:
The plastic lining prevents leakage but is sensitive to heat.
Hot liquid causes the plastic layer to break down.
Microplastic particles mix into the beverage.
You unknowingly ingest them.
While this study does not directly prove that microplastics cause cancer, long-term exposure is a recognized health concern under ongoing global research.
🥡 Black Plastic Food Containers in Deliveries
Online food deliveries commonly use black plastic containers made from recycled polymers such as polypropylene (PP) and polystyrene (PS).
These containers can release microplastic particles when:
Hot food is placed inside
The container is reheated (e.g., in a microwave)
The surface gets scratched or reused
Because black plastic often comes from mixed recycled waste — including electronic plastics — quality control can be inconsistent, increasing the risk of chemical contaminants.
Heat can accelerate the release of:
Microplastic particles
Additives and plasticizers
Other chemical residues
🔬 How Microplastics Enter the Body
Once microplastics mix into food or beverages:
They can be ingested.
Some particles may pass through the digestive tract.
Some may cross intestinal barriers and enter the bloodstream (shown in emerging research).
Over time, particles may accumulate in organs and tissues.
Scientists are investigating links between chronic microplastic exposure and:
Inflammation
Hormonal disruption
Gut imbalance
Metabolic disturbances
Although definitive long-term effects in humans are still being studied, reducing repeated exposure is a sensible precaution.
⚠️ Why Daily Exposure Matters
One occasional meal in plastic packaging may not pose a large risk.
But consider:
✔ Daily chai in paper cups
✔ Frequent online food orders
✔ Reheating meals in plastic containers
Small exposures add up over time — especially when heat is involved.
🫖 Safer Alternatives & Practical Tips
For Hot Beverages:
Carry a steel or glass mug
Avoid disposable paper cups
Choose kulhads (clay cups) when available
For Food Delivery:
Transfer food to steel or glass plates
Avoid reheating in the original plastic container
Ask for eco-friendly packaging where possible
🌿 Awareness Leads to Change
Convenience shouldn’t come at the cost of your health.
Microplastics are invisible to the eye but not harmless in the long run.
Understanding how they enter your food is the first step toward a healthier lifestyle.
Small habit changes — like avoiding heated plastics — protect you and your family.
#FoodAlertbyCocoSugarite