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Caffeine is known for providing a morning wake-up or afternoon pick-me-up, but research also suggests it supports cellular longevity. New research reveals that caffeine influences aging in a single-celled organism, remarkably similar to human cells, by triggering biological mechanisms that may slow aging.
Caffeine causes a stress-like response in cells, activating the AMP-activated protein kinase (AMPK) longevity pathway. By interacting with AMPK, caffeine seems to enhance a cell’s capacity to repair DNA damage. This indicates that caffeine not only boosts energy but may also strengthen the body’s internal defenses against the effects of aging.
The study used fission yeast as a model for human cells in the experiments. Although the results cannot be directly applied to humans, yeast share comparable cellular pathways with human cells. This method enabled researchers to closely monitor how caffeine doses impact the cell cycle and cells' resilience to damage and the potential effects on human health.
A prior study revealed that individuals consuming one to three cups of coffee daily have a 15% reduced mortality risk compared to those who don’t drink coffee. However, the study noted that coffee’s health benefits decrease when combined with sugar and saturated fats, like those found in many creamers. While the study didn’t offer specific caffeine intake guidelines for humans, other research suggests moderate consumption is beneficial.Â
These discoveries could impact various fields in the future, from lifestyle guidelines to novel drug development. The prospect of creating caffeine-based drugs to enhance public health now appears more feasible.
To view the original scientific study click below:
Dissecting the cell cycle regulation, DNA damage sensitivity and lifespan effects of caffeine in fission yeast
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.