Plastic is everywhere—in our kitchens, food packaging, beauty products, and even the air we breathe.
A new Australian study published in 2026 found something remarkable: traces of plastic-related chemicals were detected in every participant. The encouraging news is that some chemical levels dropped within just seven days after participants made a few simple changes to their daily habits.
What exactly did the researchers discover? Which lifestyle changes had the biggest impact? And what can we learn from the findings?
Dr. Gabriele Balciunaite Murziene, biomedical scientist and phytopharmacology expert, explains the results.
What Did the Study Examine?
The study, published in Nature Medicine in April 2026, included 211 participants.
Researchers detected traces of plastic-related chemicals in every participant's body, focusing primarily on:
- Phthalates.
- Bisphenols, including BPA and BPF.
- Other chemicals commonly used in plastic production.
Some of these substances are classified as endocrine disruptors, meaning they may interfere with normal hormone function.
How Do Plastic Chemicals Enter the Body?
According to the researchers, common sources of exposure include:
- Food packaged in plastic.
- Canned foods.
- Plastic bottles and food storage containers.
- Heating food in plastic containers.
- Cosmetics and personal care products.
- Household dust and indoor air.
More than 16,000 different chemicals are used in plastic production, making complete avoidance nearly impossible.
How Was the Study Conducted?
Sixty participants took part in a separate seven-day intervention and were divided into five groups.
Group 1: Reduced Plastic Contact with Food
Participants focused on minimizing contact between food and plastic packaging or containers.
Group 2: Reduced Plastic Contact with Food + Plastic-Free Kitchen Tools
In addition to changing food storage habits, participants replaced plastic kitchen utensils and containers with alternative materials.
Group 3: Personal Care Products Only
This group changed only their cosmetics, shampoos, hygiene products, and other personal care items.
Group 4: Combined Changes
Participants reduced plastic exposure from food, kitchen products, and personal care products simultaneously.
Group 5: Control Group
Participants made no lifestyle changes and continued their normal routines.
This allowed researchers to compare how everyday habits influenced chemical exposure.
What Changes Did Participants Make?
The researchers paid attention to even small everyday habits.
Participants were encouraged to:
- Replace plastic kitchen utensils with wooden, stainless steel, or glass alternatives.
- Reduce food contact with plastic packaging whenever possible.
- Heat food in glass containers instead of plastic.
- Replace certain plastic food storage products.
The overall goal was to minimize daily plastic exposure wherever practical.
The Results Were Surprising
After only seven days, researchers observed measurable reductions in several plastic-related chemicals.
Key findings included:
- Bisphenol F (BPF) levels decreased by up to 60%.
- Levels of several phthalates also declined.
The findings suggest that some plastic-related chemicals do not remain in the body for long and may respond relatively quickly to changes in daily habits.
What Had the Greatest Impact?
The researchers identified several lifestyle factors associated with higher levels of plastic-related chemicals.
Ultra-Processed Foods
Greater consumption of ultra-processed foods was associated with higher exposure to certain plastic-related chemicals.
Plastic Food Packaging
Food packaging appeared to be one of the most important sources of exposure.
Canned Foods
The lining of some food cans may contribute to bisphenol exposure.
Frequent Use of Plastic Kitchen Products
Plastic containers, utensils, dishes, and cutting boards were also associated with higher chemical exposure.
What About Cosmetics?
The study also linked some phthalate exposure to personal care products, including:
- Cosmetics.
- Shampoos.
- Makeup products.
Artificial fragrances listed as parfum or fragrance may be one potential source of phthalates in these products.
What Happened in the Control Group?
Participants who made no lifestyle changes experienced increases in some plastic-related chemicals.
Within one week:
- Mono-n-butyl phthalate increased by approximately 40%.
- Monobenzyl phthalate increased by approximately 55%.
This suggests that exposure to these substances continues through everyday activities.
Simple Ways to Reduce Plastic Exposure
The goal is not to eliminate plastic completely but to reduce unnecessary exposure where possible.
The researchers recommend:
- Avoid heating food in plastic containers.
- Replace plastic cutting boards when possible.
- Choose glass or stainless steel food containers.
- Use reusable glass or stainless steel water bottles.
- Limit canned foods.
- Reduce consumption of ultra-processed foods.
- Choose cosmetics and personal care products with fewer artificial fragrances.
Study Limitations
The researchers also emphasized several important limitations.
The study could not:
- Precisely measure all food-related sources of exposure in the control group.
- Determine whether results differed between women and men because the study groups were relatively small.
- Demonstrate a direct cause-and-effect relationship between plastic chemicals and specific diseases.
Therefore, the findings should not be interpreted as proof that plastic exposure directly causes particular health conditions.
Key Takeaways
This research highlights two important observations.
- Plastic-related chemicals are now detectable in almost everyone's body.
- Small lifestyle changes may reduce exposure to some of these chemicals within as little as one week.
Rather than creating fear about plastic, the study encourages practical everyday choices—such as how food is stored, heated, and packaged, and which personal care products we use—to help reduce unnecessary exposure over time.
