#telomeres

#telomeres

I am running. Ahead lie endless mangrove swamps, behind the green-blue waters of the Caribbean. My mind is rising away from my lurching body, which is on a treadmill and attached to a beeping machine by wires and tubes. Nurses circle. The gradient increases, as does the speed. Dignity slips away as my body fights for breath. They're after my "VO2 max", the amount of oxygen my body can absorb during my maximum capacity for exercise.

Signs of ageing accelerated when fish were exposed to the chemicals, according to the study, which could have implications for other organisms. Chemical safety regulations tend to focus on short-term exposure to high doses of pesticides and other chemicals, but the study focused on long-term exposure. Low doses of pesticides are widespread in the environment, so their effects should be studied and understood, the authors said.

High up in the Arctic Circle, Olivier Chastel begins his working day by scanning the horizon for polar bears, rifle at the ready. "In 25 years I've never had to use it, but you can't be too careful," he explains. There can't be many conservationists who go birdwatching while armed, but the danger to life from bears in Svalbard - the largest island of the Norwegian polar archipelago - is so high that it's a legal requirement.

They're known as 'man's best friend', but dogs may be especially beneficial company for women. A new study reveals how pooches have an extraordinary anti-ageing effect on ladies. According to the authors, spending just one hour per week with a dog slows a key indicator of cellular ageing known as 'telomere length'. For women, dogs may be a cheap and effective form of treatment to help reduce the physical toll of stress and improve cellular health, say the experts.

During her final year she died on 19 August 2024 she was verified as the oldest living person, a feat that drew the attention of researchers who explore the biology of ageing. We wanted to learn from her particular case to benefit other people, says Manel Esteller, a physician specializing in genetics at the University of Barcelona in Spain. At the time, Branyas was living in the small town of Olot, in the Catalonia region of Spain, where she enjoyed reading books, playing with dogs

Treatment with henagliflozin is linked to an increase in the length of telomeres, chromosomal caps that shorten over time.

The introduction of psilocybin was linked to preserved telomere length. In other words, the study appears to show that telomeres shortened more slowly after being given psilocybin than they would have without.