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For many people, grabbing a hot drink in a disposable cup is part of their daily routine. Yet the container holding your coffee or tea may not be as harmless as it seems. New research suggests the very cup designed to keep your drink hot could also be releasing tiny plastic particles into it.
Not all disposable cups release microplastics at the same rate. Researchers found that the cup material and beverage temperature both affect how many tiny plastic particles leach into a drink. Although microplastics were detected across all temperatures tested, hotter beverages triggered significantly greater particle release.
Measuring less than 5 millimeters, microplastics have emerged as an increasing public health concern. These tiny particles can enter the body through food, beverages, or the air we breathe, where they may build up in organs including the lungs and digestive system and contribute to inflammation and other health problems.
The study combined evidence from previous research with new laboratory testing. Researchers first reviewed 30 published studies, compiling 237 observations to assess how variables such as water temperature and soaking time influenced microplastic release. They then tested two popular types of disposable cups, those made entirely of polyethylene (PE) and paper cups with a polyethylene coating, to compare how much microplastic each released.
Researchers found that hot water caused the surface of polyethylene (PE) cups to become increasingly rough and irregular, a sign of physical degradation that likely contributed to greater microplastic shedding. By comparison, paper cups coated with polyethylene maintained smoother surfaces with less visible damage, which may have helped limit the release of plastic particles.
The study estimated that a single 10-ounce hot beverage consumed each day could add hundreds of thousands of microplastic particles to a person's yearly intake. Drinks served in polyethylene (PE) cups were associated with roughly 360,000 particles per year, while polyethylene-coated paper cups were estimated to release about 240,000 annually.
The healthiest and most environmentally friendly choice is a reusable cup made from stainless steel, glass or ceramic. Because these materials are non-reactive, they won't break down or release chemicals or plastic particles when filled with hot beverages.
Maintaining a healthy weight is becoming increasingly uncommon, with only one in four U.S. adults falling into that category. New research suggests excess weight may be responsible for significantly more cancers than once thought. After analyzing data from more than 450,000 people, researchers estimated that excess body fat is linked to over 11% of all cancer cases, nearly twice earlier estimates.
Being alone isn't necessarily harmful, but feeling lonely may be. According to a new study, older adults who experience persistent loneliness may face a faster decline in both cognitive and physical health. The researchers found that loneliness remained strongly linked to poorer brain health and an increased risk of early death, regardless of how socially isolated a person was.
Imagine being able to preserve your healthiest blood stem cells while you're young, then using them decades later to help rejuvenate your body. New research in mice suggests it may one day be possible to restore a more youthful blood-forming system and immune system by transplanting young stem cells later in life.
The gut microbiome is the community of trillions of bacteria, fungi and viruses that primarily live in the colon. These tiny organisms help digest food while producing compounds that can influence many aspects of both physical and mental health. Researchers have uncovered a link between specific gut bacteria and biological aging, adding to growing evidence that the gut microbiome may affect how we age.
Many of us spend hours sitting each day without giving it much thought. But research suggests that long, uninterrupted periods of sitting may do more than slow your metabolism. They could also increase your risk of dying from cancer. Now, a new study suggests it's not just how much you sit that matters, but how often you get up and move.
Could the speed of your daily walk reveal how well your brain is aging? According to new research, the answer may be yes. Scientists found that senior adults who naturally walked at a brisker pace showed bettermemory, thinking skills, and healthier brain characteristics than slower walkers, suggesting that something as simple as walking faster could help support long-term brain health.
Living bacteria could become the next frontier in cancer treatment. Researchers have discovered an amphibian gut bacterium that wiped out solid tumors in mice with a single dose, pointing to a potential therapy that targets tumors directly rather than simply changing the gut microbiome.
The foods consumed during pregnancy may influence more than just a baby’s growth. High consumption of fructose from sugary foods and drinks during pregnancy has been associated with increased risks of diabetes and heart-related problems in mothers. Now, new research suggests that a diet high in fructose may affect brain development, potentially causing biological changes that could impact learning and cognitive function later in the child’s life.
Healthy aging isn't just about living longer, it’s about staying strong enough to enjoy those extra years. New research shows that getting enough protein and combining it with resistance exercise is one of the most effective ways to preserve muscle, maintain mobility, and reduce the physical decline that often comes with aging.
Our daily routines and body rhythms tend to shift with age. Although chronological age is fixed by time, biological age reflects how well the body is functioning. A new study suggests that aging may affect circadian rest-activity rhythms, the body’s natural daily cycle that helps regulate wakefulness, activity, rest, and sleep.
Exercise may be one of the most powerful anti-aging tools we have. New research suggests it can switch aging muscles back into repair mode, helping them recover, rebuild, and stay stronger as we grow older.