HealthThis Is Your Brain on MicroplasticsWhat's going on: Scientists have known for years that microplastics are present in virtually every human body — likely including yours — but a new study raises concerns about rising levels in our brains. After examining 52 autopsied brains from 2016 and 2025, researchers found microplastic levels had increased by 50% over eight years. On average, each brain contained 7 grams of microplastics, about the weight of a plastic spoon. While that number may be an overestimate — since other particles in the brain can resemble microplastics — it's still a tough fact to swallow. The most commonly found plastic? Polyethylene, the same material used in food packaging and plastic bags. Researchers also found that dementia patients’ brains contained three to five times more microplastics than those without cognitive disorders. However, that doesn’t mean plastic causes dementia. Instead, researchers suggest dementia may weaken the brain's defenses, allowing more plastic to accumulate. What it means: The study sheds light on the growing threat of microplastics in our environment. Experts say the rising levels of plastic in humans mirror the global surge in plastic production, which doubles globally every 10 to 15 years. Microplastics have turned up in blood, breast milk, and placentas. While their health risks remain unclear, they’ve been linked to strokes and heart attacks. Microplastics, unlike some pollutants, are essentially inescapable, making it difficult to study their full impact. As one expert put it: “There are no control groups. Everyone is exposed.” Related: This Senator Could Decide if RFK Jr. Gets Confirmed (The Hill) |