Microplastic “detoxes” are booming, but many of the most eye‑catching treatments say more about clever marketing than solid science, even as real evidence of microplastic harm to human health continues to mount.
The rise of sketchy microplastic “detox” treatments
High‑end clinics are now selling blood‑filtering “detox” procedures that promise to cleanse the circulation of microplastics, PFAS and other pollutants, sometimes promoted via celebrity posts showing themselves hooked up to apheresis machines.
These sessions can cost in the region of thousands of pounds or dollars per treatment, yet independent experts note that evidence they improve hard health outcomes is extremely limited, and testing methods for body microplastic “load” are still evolving.
Alongside procedures, supplement brands are launching “microplastic detox” formulas that claim to bind or flush plastic particles from the body, often marketed through influencer campaigns and wellness content rather than rigorous clinical data.
What microplastics are doing in the body
Microplastics (and even smaller nanoplastics) are now being detected throughout the human body – in brain tissue, heart, testicles, placenta, lymph nodes, breast milk, semen, urine and the meconium of newborn babies.
Early human data are particularly concerning for cardiovascular disease: in a major study of people undergoing surgery to clear arterial plaque, those whose plaque contained microplastics had a significantly higher risk of heart attack, stroke and death in the following two years than those without detectable plastics.
Animal and cell studies show plastic particles can drive inflammation, immune disruption, tissue damage and metabolic changes, supporting their potential role in conditions like atherosclerosis, cancer and hormone‑related disorders.
Pregnancy, brain health and long‑term risk
Microplastics have been identified in human placental tissue, raising concerns that plastic particles and their chemical additives may interfere with foetal development or placental function.
Researchers are also finding microplastics in the brain and in tissues involved in hormone regulation, and are actively investigating how these exposures may contribute to dementia, thyroid disease and other neuro‑endocrine problems over a lifetime.
Although large, long‑term human studies are still in their infancy, leading clinicians argue the signal is already strong enough to treat microplastics as a plausible contributor to major epidemics such as cardiovascular disease, obesity, cancer and neurodegeneration.
Weight gain, metabolism and Dr Kenna Stephenson’s perspective
In her CurraNZ article “Plastic Penetration and Potential Plant Protection – A Physician’s Perspective,” HERE Dr Kenna (pictured, left) explains that microplastics and their associated chemicals may disrupt metabolism and promote weight gain by interfering with hormonal signalling, insulin sensitivity and inflammatory pathways.
She highlights emerging research linking higher microplastic exposure with metabolic dysfunction and argues that addressing this hidden pollutant burden is likely to become an important pillar in tackling obesity and related chronic disease.
Dr Kenna also discusses how polyphenol‑rich plant compounds, including anthocyanins from blackcurrants, may help counteract some of the damage associated with microplastic exposure by:
- Supporting antioxidant defences and reducing oxidative stress.
- Modulating inflammatory responses that are amplified by plastic‑driven cellular injury.
- Helping maintain vascular and metabolic health in the face of environmental insults.
She points readers to human and preclinical studies in which anthocyanin‑rich interventions improve markers of vascular function, metabolism and inflammatory status – mechanisms that are highly relevant given the vascular and metabolic harms now being documented in microplastic research.
Why evidence‑based strategies matter
The emerging science on microplastics makes one thing clear: these particles are real, pervasive and biologically active – but we do not yet have magic bullet procedures or pills that can selectively scrub them from the body.
Rather than spending money on unproven “blood cleanses” or detox supplements, current expert advice focuses on:
- Reducing exposure (less plastic packaging and cookware, fewer single‑use plastics, more glass and stainless steel).
- Supporting overall cardiometabolic and brain health through sleep, diet quality, stress management and physical activity.
- Leveraging evidence‑based nutritional strategies – such as anthocyanin‑rich foods and supplements – that are already shown to benefit vascular, metabolic and inflammatory pathways that microplastics appear to harm.
For a deeper physician‑led discussion of how microplastics may be driving weight gain and how anthocyanin‑rich blackcurrant extracts could form part of a rational, science‑grounded response, readers can explore Dr Kenna’s full blog on the CurraNZ site HERE.