Professor Ashani Weeraratna has been studying the cancer microenvironment in her lab for the past 17 years. Taking into account that the tissues in our bodies change as we age is important when researching cancer biology. She hopes that gaining a better understanding of how the growth of cancer cells is affected by their direct cellular ‘neighbourhood’, especially when we age, could be key to developing better treatments for patients with cancer. Read more in https://www.nature.com/immersive/d428…
Bees, termites, and ants can teach us a lot about cooperation, communication, and the skills that keep societies together. But these so-called social insects may also hold secrets that could reshape our understanding of human aging. Many social insects exhibit surprising aging characteristics that cause their life spans to shift depending on their roles.
Following the death of a queen Indian jumping ant, for example, workers fight for the right to transform into an egg-laying ant. Much is at stake: the life expectancy of an egg-layer is five times longer than that of a worker’s. Though fruit flies, mice, and nematodes currently dominate aging research, some scientists say social insects’ aging behaviors could help dissect aging mechanisms in humans. This video will take you deep into the catacombs—er, honeycombs—of insect aging.
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Most research on aging has been done on model organisms with limited life spans, such as flies and worms. Host Meagan Cantwell talks to science writer Yao-Hua Law about how long-living social insects—some of which survive for up to 30 years—can provide new insights into aging.
Also in this episode, host Sarah Crespi talks with Noshir Contractor, the Jane S. & William J. White Professor of Behavioral Sciences at Northwestern University, about his AAAS session on keeping humans in harmony during long space missions and how mock missions on Earth are being applied to plans for a crewed mission to Mars.
Opportunities for enhancing brain health across the lifespan
Published online by Cambridge University Press: 22 March 2021
As we age, there are characteristic changes in our thinking, reasoning and memory skills (referred to as cognitive ageing). However, variation between people in the timing and degree of change experienced suggests that a range of factors determine individual cognitive ageing trajectories. This narrative review considers some of the lifestyle factors that might promote (or harm) cognitive health. The focus on lifestyle factors is because these are potentially modifiable by individuals or may be the targets of behavioural or societal interventions. To support that, the review briefly considers people’s beliefs and attitudes about cognitive ageing; the nature and timing of cognitive changes across the lifespan; and the genetic contributions to cognitive ability level and change. In introducing potentially modifiable determinants, a framing that draws evidence derived from epidemiological studies of dementia is provided, before an overview of lifestyle and behavioural predictors of cognitive health, including education and occupation, diet and activity.
Ikaria, a tiny island in the Aegean sea, is known as a blue zone, a special place where life expectancy is much higher than the rest of the world. We travel there to explore just what it is that makes the island so special.
Macular degeneration is a leading cause of visual impairment in people over 65 and can lead to blindness. One in three people will eventually suffer some degree of macular degeneration, which is caused by abnormal blood vessels under the retina, the light-sensitive part of the eye. We treat both the more common “dry” as well as the more dangerous “wet” forms of macular degeneration. While there is currently no cure for this disease, we offer the latest treatments to reduce the risk of vision loss and blindness. These include anti-VEGF drugs—which attack proteins that create the abnormal blood vessels that cause macular degeneration—and photodynamic therapy, in which patients ingest medication that is then activated with a laser.
The US is facing an aging population, falling birth rate and economic recession caused by the coronavirus pandemic. These issues will have huge implications on the size of the workforce and the consumer base. Watch the video to find out why America could be confronting an underpopulation problem and what business leaders and policymakers can do about it.
Does your grandparent hold the secret to a happier New Year? Because Americans over 80 years old report feeling happier than any other age group, we asked them to share their wisdom as 2021 begins during a time of challenge and uncertainty. These elders include cannabis comedian Tommy Chong, a psychologist, a transgender burlesque performer, and a 90-year-old nudist who lets it all hang out. Self-Evident: A PBS American Portrait Miniseries seeks to answer the question: what does it really mean to be an American today? Join our hosts — Dr. Ali Mattu, a licensed therapist and clinical psychologist and YouTuber behind “The Psych Show,” as well as Danielle Bainbridge, Ph.D., historian and the writer/creator of PBS’s “The Origin of Everything” — as they explore the lives of real Americans, living during this unprecedented moment in time.
Cataract surgery is one of the safest and most effective types of surgery. In about 90 percent of cases, people who have cataract surgery have better vision afterward. Learn more about aging and your eyes at: https://www.nei.nih.gov/learn-about-e….