Your Best Defense Against Microplastics Might Already Be in Your Produce Drawer

   

If it seems like a weekly occurrence that a new microplastic-filled product is potentially harming your health, you’re right. Between tea bags, lipstick, dishwasher detergent, and gum (among many other things), it’s hard to avoid these tiny toxic particles. But there’s a glimmer of good news: a study published in the Journal of Pharmaceutical Analysis found that colorful fruits and vegetables may combat the negative effects of microplastics in the body. 

Fruits and vegetables are known for their abundant vitamins and minerals, but the study examined how anthocyanins — natural compounds found in colorful fruits and vegetables — may protect the reproductive systems from microplastic damage. Specifically, researchers explored how anthocyanins interact with steroid receptors (protein molecules within a cell that bind to hormones such as estrogen, progesterone, and testosterone) which play essential roles in reproductive health, says Angelo Falcone, MD, an integrative medicine physician and founder of Dignity Integrative Health and Wellness. “This isn’t an original research study with experiments, but rather a comprehensive review of existing literature because the study authors looked at how microplastics disrupt our endocrine system and harm reproductive health, then assessed how anthocyanins might counteract these effects through their antioxidant and anti-inflammatory properties.”

What’s particularly striking about this research is how it represents an intersection of environmental and nutritional medicine. “We can’t completely avoid microplastic exposure in today’s world since they’re in our food, water, and air, but we can harness the protective power of colorful plant foods as part of our defense strategy,” Falcone says. 

So which fruits and veggies help fight microplastics — and how, exactly, do they do it? Here’s what doctors want you to know.

What are anthocyanins?

Anthocyanins are natural pigments that give fruits and vegetables their vibrant red, purple, and blue color, says Falcone. “There are over 700 varieties, but anthocyanins are a type of flavonoid (a group of compounds known for antioxidant properties) found in foods like blueberries, blackberries, red cabbage, and purple corn.”

These compounds aren’t just responsible for beautiful colors — they’re also biologically active molecules that interact with various systems in the body to promote overall health. “Anthocyanins are among the most potent natural antioxidants we can consume through food because they neutralize harmful free radicals in the body, helping to reduce oxidative stress that can damage cells, proteins, and DNA,” Falcone explains. 

Furthermore, due to the powerful antioxidant properties of anthocyanins, they are recognized for their ability to protect the body from inflammation and various stress-related conditions, such as heart disease, neurodegenerative disorders, and cancer, which would otherwise be caused by free radicals, says Nicholas Church, MD, a family medicine physician and founder of Somerset Medical. 

How do anthocyanins in fruits and vegetables counteract the adverse effects of microplastics? 

First, a microplastics primer: Scientists are still exploring exactly how microplastics interact with the human body, but at a basic level, the toxic properties trigger inflammation and oxidative stress, which are both responsible for damaging cells and tissues. 

Microplastics also function as endocrine disruptors, interfering with hormonal systems that regulate reproduction, metabolism, and development. “Most concerning, though, is microplastic’s ability to cross protective barriers in our body, including the blood-testis barrier and placental barrier, allowing them to accumulate in reproductive organs, where they can directly damage reproductive cells and interfere with normal fertility and development,” says Falcone.

Fortunately, anthocyanins operate through several mechanisms to protect against microplastic damage. First and foremost, anthocyanins are potent antioxidants, meaning they neutralize the oxidative stress that occurs when microplastics enter the body, thereby minimizing the risk of cellular damage, Falcone says. They also reduce microplastic-induced inflammation, ultimately lowering the risk of gastrointestinal issues, cancer, and organ damage, Church adds. 

Additionally, anthocyanins may interact with steroid receptors to regulate hormone functions that microplastics can disrupt, according to Falcone. “Essentially, anthocyanins provide a multilayered defense system against microplastics.”

Which foods are rich in anthocyanins?

The richest sources of anthocyanins are deeply colored fruits and vegetables. “Berries are superstars, particularly blueberries, blackberries, cranberries, raspberries, and bilberries, but other excellent sources include black rice, purple corn, red cabbage, purple sweet potatoes, red grapes, pomegranates, and açai berries,” Falcone says. “The general rule is, the deeper and more vibrant the purple, blue, or red color, the higher the anthocyanin content.”

It’s also worth noting that every colorful fruit and vegetable contains slightly different types of anthocyanins, each providing its own unique health benefit, so Falcone says it’s important to eat the rainbow.

Now, as for the quantity of anthocyanins you should consume to enjoy their benefits, there is no standardized recommendation. However, research suggests aiming for 50 milligrams of anthocyanins per day may assist in reducing oxidative stress. According to Falcone, that translates to roughly one cup of blueberries or half a cup of blackberries. 

Just remember that consistency is key. “The benefits of anthocyanins tend to be cumulative, so long-term, consistent intake (weeks to months) is necessary to see measurable effects on combating the damage from microplastics,” Church says. “Think of anthocyanins as an ongoing protective strategy rather than a one-time remedy,” adds Falcone.

What are the additional health benefits of anthocyanins?

Beyond their role in combating microplastics, studies suggest that anthocyanins support heart health by enhancing blood vessel function and reducing inflammation. They also show promise in promoting brain health, potentially delaying cognitive decline. Some research even indicates that anthocyanins may reduce the risk of skin cancer, colorectal cancer, and chronic obstructive pulmonary disease.

On top of that, the powerful compound supports reproductive health in both men and women, with recent research indicating that they balance hormone levels and protect reproductive organs from oxidative damage. “In men, certain anthocyanins appear to safeguard testicular tissue and maintain healthy testosterone production, and in women, anthocyanins may help protect ovarian function,” Falcone says. “What’s fascinating, though, is how anthocyanins seem to modulate steroid receptors — the cellular components that respond to reproductive hormones — helping maintain proper hormonal signaling.”

How else can you counteract the harmful effects of microplastics?

Beyond consuming anthocyanin-rich foods, Falcone and Church suggest the following to reduce microplastic exposure and counteract their effects: 

• Minimize plastic use in food preparation and storage. Instead of plastic, opt for glass, stainless steel, bamboo, or ceramic containers. 
• Filter drinking water. Whether you’re at home or on the go, high-quality water filters can remove a majority of microplastics.
• Avoid heating food in plastic. Microwaving leftovers in plastic accelerates chemical leaching, so it’s better to reheat food in glass or ceramic kitchenware. 
• Eat a balanced diet. Fiber-rich foods (like berries, lentils, apples, sweet potatoes, chia seeds, and walnuts) and cruciferous vegetables (like broccoli, cabbage, cauliflower, and kale) bind to the digestive tract and boost liver detoxification to reduce microplastic toxicity. Probiotics in kimchi, miso, tempeh, and kefir also help maintain a healthy gut and reduce the presence of harmful chemicals.

This is only for your information, kindly take the advice of your doctor for medicines, exercises and so on.   

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Mouse study shows microplastics infiltrate blood brain barrier

Much of the millions of metric tons of plastic waste that washes into the sea each year is broken down into tiny fragments by the forces of the ocean, and researchers are beginning to piece together what this means for organisms that consume them. Scientists in Korea have turned their attention toward the top of the food chain by exploring the threat these particles pose to mammal brains, where they were found to act as toxic substances.

In recent years, studies have revealed the kind of threat microplastics pose to marine creatures. This has included weakening the adhesive abilities of muscles, impairing the cognitive ability of hermit crabs and causing aneurysms and reproductive changes in fish. They've turned up in the guts of sea turtles all over the world, and been discovered in seal poo as evidence of them traveling up the food chain. Research has also shown they can alter the shape of human lung cells.

To further our understanding of these dangers, researchers at Daegu Gyeongbuk Institute of Science and Technology orally administered polystyrene microplastics two micrometers in size or smaller to mice over the course of seven days. Like humans, mice have a blood-brain barrier that prevents most foreign substances, and especially solids, from entering the organ, but the scientists found that the microplastics were able to make their way through.

Once in the brain, the scientists found that the particles built up in the microglial cells, which are key to healthy maintenance of the central nervous system, and this had a significant impact on their ability to proliferate. This was because the microglial cells saw the plastic particles as threat, causing changes in their morphology and ultimately leading to apoptosis, or programmed cell death.

Additionally, the scientists carried out experiments on human microglial cells and also observed changes in their morphology, along with changes to the immune system via alterations to the expression of relevant genes, related antibodies and microRNAs. As seen in the mouse brains, this also induced signs of apoptosis.

“The study shows that microplastics, especially microplastics with the size of 2 micrometers or less, start to be deposited in the brain even after short-term ingestion within seven days, resulting in apoptosis, and alterations in immune responses, and inflammatory responses," says study author Dr. Seong-Kyoon Choi." Based on the findings of this research, we plan to conduct additional research that can further reveal the brain accumulation of microplastics and the mechanism of neurotoxicity."

The research was published in the journal Science of The Total Environment. 

 

This is only for your information, kindly take the advice of your doctor for medicines, exercises and so on.   

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What is dust? And where does it all come from?

Everything in our homes gathers dust. But what exactly is it? Where does it come from, and why does it keep coming back? Is it from outside? Is it fibres from our clothes and cells from our skin?

Yes, but it’s a lot more than that.

People from all around Australia have been sending their dust to Macquarie University’s DustSafe program. Instead of emptying the vacuum cleaner into the bin, they package it up and we analyse it. As a result, we are getting to know the secrets of your dust! In total, 35 countries are part of this program.

Here’s a taste of what we know so far.

Dust is everywhere

Dust is everywhere. It settles on all surfaces in the natural environment as well as inside homes and buildings — where we spend about 90% of our time, even before COVID.

Some dust is natural, coming from rocks, soils and even space. But the DustSafe program is revealing Australian house dust can include nasties such as:

• trace metals

• radioactive elements

• antibiotic resistant genes (genes that make bacteria resistant to antibiotics)

• microplastics and

• perfluorinated chemicals (PFAS) found in fire-fighting foams, stain and water protection for fabrics and carpets, some packaging and other sources.

Dust from inside your home

Some estimates suggest one third of trace element contaminants in household dust originate from sources inside your home, with the rest migrating from outside via air, clothes, pets, shoes and the like.

You and your pets are constantly contributing skin cells and hair to dust. Dust is also made up of decomposing insects, bits of food, plastic and soil.

Intuitively, one might think having pets transporting a variety of organic contaminants including feces into homes is somewhat gross. However, there is emerging evidence that some “filth” is beneficial as it may help your immune system and reduce allergy risk.

Cooking, open fireplaces and smoking indoors adds very fine dust to your home along with contaminants of concern, which are associated with poor health outcomes.

Dust contains a wide collection of chemicals, including those listed on the UN’s Stockholm Convention on Persistent Organic Pollutants, which are linked to certain cancers, birth defects, dysfunctional immune and reproductive systems, greater susceptibility to disease and damage to the nervous system.

Chemicals used in pesticides and in our clothing and furniture also combine with dust in our homes. Toxic flame retardants are used in countless domestic products including children’s pyjamas and can make their way into dust.

Dust also contains microplastics from clothes, packaging, carpeting and furnishings. They’re easily inhaled and ingested, especially by children who often put their hands in their mouth.

Pefluorinated chemicals or PFAS — known as the “forever chemicals” — are used in many domestic products including cosmetics and some non-stick surfaces. These chemicals are in our house dust, too.

Dust from outside your home

About two-thirds of household dust comes from outdoors.

Garden soil and road dust gets tracked in on your shoes or blown in on windy days. Outdoor dust particles get in on the hairs of your pets. Vehicle exhaust dust also gets inside.

Recent dust storms have transported topsoil from farming lands and desert regions to our homes in the city.

Bushfires create fine particulate atmospheric dust, which can contain toxic components from past pollution.

Dust from nearby mines and industry can result in toxic exposures to children.

Poor air quality and damp homes are a source of disease and death.

By deduction, dust would also contribute to adverse health outcomes. Certain types of dust are particularly bad; there are renewed exposures concerns about silicosis dust for tradespeople, and asbestos dust from home renovation.

Excessive use of disinfectants and antibacterial products has been linked to the increased prevalence of antibiotic resistant genes, which we can detect in our dust.

Nearly one in five Australians have allergic rhinitis (hay fever), caused by dust related allergens such as dust mites, pollen, pet dander and skin particles.

Take action against dust!

House dust is part of life. Even in closed-up homes, it will still settle from the indoor atmosphere, leak from the ceiling cornices and attic spaces, and seep into your living areas through cracks around windows and doors.

Any particles of dirt, smoke, fibres or crushed materials that go into the air eventually come down as dust.

But there’s much you can do.

We can try to stop dust getting inside. Use door mats and take your shoes off indoors. Mud-covered children or pets can be towelled down at the door and dusty work clothes should be removed upon entering.

We can choose wisely what chemicals we allow into our homes and how they are used.

Reducing our use of plastics, pesticides and waterproofers will help to reduce the chemical load. Quit unnecessary antibacterial products. A damp cloth with soap or a detergent is just as useful to clean a surface.

Regular vacuuming helps enormously. Vacuum cleaners fitted with a fine particle filter (such as HEPA filter) are more effective at removing allergen-causing dust.

Dusting with a dry cloth or feather duster is likely to recirculate the dust back into the air, so use a damp cloth instead.

Wet mopping of hard floor surfaces also removes fine dust left behind by sweeping or vacuuming.

This is only for your information, kindly take the advice of your doctor for medicines, exercises and so on.   

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