Tupperware Microplastics: Myths vs. Reality

Here’s what you need to know about Tupperware and microplastics:

  • Not all Tupperware releases harmful microplastics
  • Heat, age, and use affect microplastic release
  • BPA-free doesn’t guarantee safety
  • Food containers are just one source of microplastics in food

Quick comparison of plastic types used in Tupperware:

Plastic TypeSafety LevelMicroplastic Release
HDPE (#2)HighLow
LDPE (#4)HighLow
PP (#5)HighLow

To reduce microplastic exposure:

  1. Use glass or metal containers when possible
  2. Don’t microwave food in plastic
  3. Replace old or damaged containers
  4. Avoid heating or storing acidic foods in plastic

While Tupperware isn’t the main source of food microplastics, it’s wise to use plastic containers carefully and consider alternatives when possible.

Myth 1: All Tupperware Releases Harmful Microplastics

Not all Tupperware products release harmful microplastics. The safety of Tupperware depends on the type of plastic used to make it. Let’s look at the different plastics in Tupperware and how likely they are to release microplastics.

Types of Plastic Used in Tupperware

Tupperware mainly uses three types of plastic:

Plastic TypeCodeSafety Level
High-Density Polyethylene (HDPE)#2High
Low-Density Polyethylene (LDPE)#4High
Polypropylene (PP)#5High

These plastics are among the safest for storing food and can be used many times. The Green Guide, owned by National Geographic, says these plastics are good for food storage and can be washed in the dishwasher often.

Which Plastics Release More Microplastics?

All plastics can release microplastics, but some do it more than others. The plastics used in Tupperware (HDPE, LDPE, and PP) are less likely to release harmful microplastics compared to other types of plastic.

Tupperware knows about these concerns and tries to make their products last longer. This means you don’t need to replace them as often. Many Tupperware products also have recycling codes on them to help with proper recycling.

Remember that how safe a plastic container is can change over time. Things that affect safety include:

  • Age of the container
  • Wear and tear
  • Exposure to heat

New Tupperware made from HDPE, LDPE, or PP is usually safe. But older or damaged containers might be more likely to release microplastics.

Myth 2: Microplastics from Tupperware Are Always Harmful

The idea that microplastics from Tupperware are always harmful is not fully correct. While microplastics in food and the environment are a concern, scientists are still studying their effects on human health.

What We Know About Microplastics

Research on microplastics and human health is still new. Here’s what studies show:

SourceEstimated Microplastic Intake
Average diet39,000 – 52,000 particles/year
Bottled waterAdditional 90,000 particles/year
Takeout containers12-203 pieces/week (frequent users)

These numbers might seem high, but there’s no set limit for safe microplastic intake in humans. This makes it hard to know the exact health risks from Tupperware or other sources.

What Makes Microplastics Possibly Harmful

The potential harm of microplastics depends on:

  1. Size
  2. What they’re made of
  3. How much you’re exposed to
  4. Added chemicals

A study found that people who eat fast food often have up to 40% more phthalates (chemicals in some plastics) in their bodies. But this study looked at all fast food packaging, not just Tupperware.

It’s important to know that not all microplastic exposure is equally risky. The plastics used in Tupperware (HDPE, LDPE, and PP) are thought to be safer for food storage than other types.

To lower possible risks:

  • Use glass or metal containers when you can, especially for hot food
  • Don’t microwave food in plastic containers
  • Replace old or damaged Tupperware
  • Follow the maker’s instructions for using and cleaning plastic containers

Myth 3: Old Tupperware Is Always Safe to Use

Many people think old Tupperware is always safe, but this isn’t true. The age and condition of plastic containers can affect their safety and how likely they are to release tiny plastic bits.

How Use Affects Tupperware Over Time

Regular use and cleaning can harm plastic containers:

  • Dishwashers and hard scrubbing can make plastic leak chemicals
  • Scratches create spaces where germs can grow
  • Foods like tomatoes and lemons can break down the plastic faster

These things can make old Tupperware release more chemicals and tiny plastic bits. Dr. Laura Vandenberg, who studies this topic, says: “If it’s not safe when you buy it, it’s not safe 10 years later.”

What Affects Tupperware SafetyHow It Affects Safety
AgeMore likely to leak chemicals
Dishwasher useWears down the plastic
Hard scrubbingMakes tiny scratches
Storing acidic foodBreaks down plastic faster
Visible damageHolds germs, leaks more chemicals

When to Get New Tupperware

To keep your food safe and avoid tiny plastic bits, get new Tupperware:

  1. If it’s older than 10 years
  2. When you see scratches, stains, or warping
  3. If it smells strongly of plastic
  4. After using it often for acidic or oily foods
  5. If it doesn’t say “microwave safe” and you heat food in it a lot

Myth 4: Microwaving Tupperware Is Safe

Many people think it’s okay to microwave Tupperware, but this might not be true. New studies show that heating plastic containers in the microwave can be risky.

How Heat Affects Plastic Containers

When plastic gets hot in the microwave, it can change:

TemperatureWhat Happens to Plastic
Room tempVery little change
Cold (in fridge)Slow breakdown over time
Hot (in microwave)Quick breakdown, more tiny bits released

The heat makes the plastic break down faster. This can cause small pieces of plastic to get into your food.

What Studies Say About Microwaving Plastic

New research shows some worrying things:

  • Heating baby food containers in the microwave for 3 minutes can release millions of tiny plastic bits
  • Even keeping plastic containers in the fridge or at room temp for 6 months can release lots of tiny plastic bits
  • In lab tests, these tiny bits killed many human cells

These findings show that microwaving plastic might not be safe, especially for babies and young kids.

How to Use Tupperware Safely in the Microwave

To lower your risk when using the microwave:

  1. Use glass or ceramic dishes instead of plastic
  2. If you must use plastic, pick ones that say “microwave-safe”
  3. Don’t microwave foods like tomato sauce in plastic
  4. Throw away old or damaged plastic containers
  5. Try using glass or metal containers for storing and reheating food
Container TypeSafe for Microwave?
GlassYes – Best choice
CeramicYes – Good choice
PlasticMaybe – Be careful
MetalNo – Never use

Myth 5: BPA-Free Tupperware Has No Risks

 

BPA

 

Many people think BPA-free Tupperware is safe, but this isn’t always true. Let’s look at the facts about BPA-free plastics and how they might affect your health.

Other Chemicals in Plastic Containers

BPA-free plastics often have other chemicals that might be harmful:

ChemicalWhere It’s FoundPossible Health Issues
BPSBPA-free plasticsCan mess with hormones, like BPA
BPFBPA-free plasticsCan harm hormones and cells
PhthalatesMany plasticsCan cause problems with having babies and growing

These chemicals can get into your food, especially when you heat the container or use it for a long time.

Are BPA Alternatives Safe?

New studies show BPA alternatives might not be as safe as we thought:

  • Danish scientists found that chemicals used instead of BPA can be just as bad
  • Some BPA-free products have BPS or BPF, which we don’t know much about yet
  • The “BPA-free” label might make people think these products are totally safe when they’re not

To lower your risks:

  1. Use glass or metal containers
  2. Don’t microwave food in plastic
  3. Get new containers if your old ones look worn out

We Need to Learn More

We’re still learning about plastic safety:

  • We don’t know all the long-term effects of BPA alternatives
  • Scientists are still studying different plastic additives
  • It’s good to keep up with new information about plastic safety

BPA-free Tupperware might be better than containers with BPA, but it’s still smart to be careful with all plastic food containers. As we learn more, we might find safer ways to store food in the future.

Myth 6: All Food Microplastics Come from Containers

While food containers add microplastics to our diet, they’re not the only source. Let’s look at where food microplastics come from and how much Tupperware really adds to the problem.

Where Food Microplastics Come From

Microplastics in our food have many sources:

  1. From the Environment
    • Ocean: Tiny plastics in seawater get into fish and seafood
    • Farms: Plants can take in microplastics from soil
  2. During Food Making and Packaging
    • Plastic packaging can shed tiny bits into food
    • Plastic tools used to make food can add microplastics
  3. From Everyday Things
    • Plastic tea bags can put lots of tiny plastic bits in tea
    • Bits from clothes can get into food while cooking or storing
FoodHow Many Microplastics It Has
Sea saltUp to 273 bits per pound
HoneyUp to 300 fibers per pound
BeerUp to 109 pieces per quart
Shellfish0.36-0.47 pieces per gram

How Much Tupperware Adds

Tupperware and other plastic containers do add some microplastics to food, but not as much as other sources:

SourceAmount of Microplastics
SeafoodUp to 11,000 pieces per year from shellfish
Rice3-4 milligrams per 100 grams
Bottled waterAbout 240,000 pieces per liter
TupperwareLess if used right

Things that make Tupperware release more microplastics:

  • Heating it up (like in a microwave)
  • How old and worn out it is
  • What kind of food you put in it (oily or sour foods can make it worse)

To keep microplastics from Tupperware low:

  • Don’t heat food in it
  • Replace old or scratched containers
  • Use glass or metal containers when you can

Conclusion

Main Facts About Tupperware and Microplastics

  • Not all Tupperware releases harmful microplastics the same way
  • Heat, age, and use affect how much microplastic a container releases
  • BPA-free doesn’t mean safe; other chemicals can still be harmful
  • Food containers are just one way we get microplastics in our food

How to Use Plastic Containers Safely

To lower your contact with microplastics from food storage:

  1. Use glass, ceramic, or metal containers when you can
  2. Don’t heat food in plastic containers
  3. Replace old or scratched plastic containers often
  4. Try cloth or paper instead of plastic when possible
Container MaterialWhy It’s Good
GlassDoesn’t react with food, safe for microwave
MetalStrong, doesn’t react with food
CeramicHandles heat well, easy to clean
SiliconeBends without breaking, doesn’t make microplastics

What’s Coming Next for Tupperware and Microplastics

As we learn more, we might see:

  • New, safer ways to store food
  • More studies on how microplastics affect us over time
  • New kinds of food packaging that break down naturally
  • People wanting more clear info about what’s in their products

In the future, we’ll likely use more earth-friendly materials for storing food. People will know more about the risks of microplastics. While plastic containers are still common, more people are choosing other options that are better for the earth.

FAQs

Should I avoid plastic Tupperware?

It’s best to use less plastic Tupperware, especially for hot foods. Here’s what to do:

ActionReason
Use glass or metal containersSafer than plastic
Don’t put hot food in plasticStops chemicals from leaking
Choose BPA-free if using plasticLess harmful
Replace plastic containers oftenReduces risk over time

Can you get microplastics from plastic containers?

Yes, plastic containers can put tiny plastic bits in your food. Here’s what to know:

FactWhat It Means
All tested plastic containers had microplasticsPlastic containers often have tiny plastic bits
Hot food in plastic makes more microplasticsDon’t put hot food in plastic
Microwaving plastic is riskyUse glass or ceramic for heating food
“Microwave-safe” plastic is betterIf you must use plastic, pick this kind

To lower your risk:

  • Put food in glass or ceramic before heating
  • Don’t microwave in plastic
  • Use glass, metal, or ceramic containers when you can

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