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Minimal TV viewing may be protective for heart diseases linked to Type 2 diabetes

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Watching no more than one hour of TV a day may lower the risk of heart attack, stroke and other blood vessel diseases among people with varying levels of genetic risk for Type 2 diabetes, including high genetic risk, according to new research.

Atherosclerotic cardiovascular disease, or ASCVD, is caused by plaque buildup in arterial walls and refers to conditions that include heart disease, stroke and peripheral artery disease.

These conditions may lead to severe consequences, such as compromised quality of life, bypass surgeries, stenting procedures, amputations and premature death.

This study is one of the first to examine how the genetic risk for Type 2 diabetes may interact with TV viewing in relation to the future risk of atherosclerotic cardiovascular disease.

Youngwon Kim, Ph.D. is lead author of the study and a professor in the School of Public Health at The University of Hong Kong in Pokfulam, Hong Kong.

The researcher saod: “Type 2 diabetes and a sedentary lifestyle, including prolonged sitting, are major risk factors for atherosclerotic cardiovascular diseases.

“Watching TV, which accounts for more than half of daily sedentary behavior, is consistently associated with an increased risk of Type 2 diabetes and atherosclerosis.

Our study provides new insights into the roles of limiting TV viewing time in the prevention of atherosclerotic cardiovascular diseases for everyone and especially in people with a high genetic predisposition for Type 2 diabetes.”

This study examined data from a large biomedical database and research resource containing genetic, lifestyle and medical records for 346,916 UK adults, average age of 56 years, and 45 percentmale.

During nearly 14 years of follow-up, the study identified 21,265 people who developed atherosclerotic cardiovascular disease.

For each participant, researchers calculated a polygenic risk score for Type 2 diabetes based on 138 genetic variants associated with the condition.

A polygenic risk score is a statistical method to predict a person’s risk of developing a particular disease or condition by combining information from many genetic variants.

To categorise participants into genotype TV-viewing groups, researchers combined three categories of Type 2 diabetes genetic risk: low, medium and high, with two categories of participants who self-reported through questionnaires: watching TV either one hour or less a day, or two hours or more each day.

The analysis found:

  • About 21 per cent of participants reported watching TV one hour or less a day; more than 79 per cent reported two or more hours per day of TV-watching time.
  • Compared to watching TV for one hour or less daily, spending two hours or more daily in front of the TV was associated with a 12 per cent higher risk of atherosclerotic cardiovascular disease, regardless of their genetic risk for Type 2 diabetes.
  • Evaluations indicated that participants with medium and high Type 2 diabetes genetic risk did not have a higher risk of developing atherosclerotic cardiovascular disease as long as TV viewing was limited to one hour or less daily.
  • The 10-year absolute risk, or probability, of developing atherosclerotic cardiovascular disease was lower (2.13 per cent) for people with high Type 2 diabetes genetic risk combined with one hour or less daily of TV viewing compared to people with low Type 2 diabetes genetic risk and who reported two or more hours of daily TV viewing (2.46 per cent).

Mengyao Wang, Ph.D., and a recent Ph.D. graduate of The University of Hong Kong.

Wang said: “We found that people with high genetic risk for Type 2 diabetes may exhibit lower chances of developing atherosclerotic cardiovascular disease by limiting TV watching to one hour or less each day.

“This suggests that less TV viewing could serve as a key behavioral target for preventing atherosclerotic cardiovascular diseases linked to Type 2 diabetes genetics.

“Future strategies and actions to prevent disease and improve health by reducing time in front of the TV and promoting other healthy lifestyle modifications should target broad populations, including those with a high genetic risk for Type 2 diabetes.”

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Ozempic maker to launch diabetes pill

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Novo Nordisk will launch an Ozempic pill for diabetes in select doses in the second quarter of this year.

The Danish drugmaker said the US Food and Drug Administration has approved Ozempic tablets in 1.5 milligram, 4 milligram and 9 milligram doses.

The new Ozempic branding is intended to help patients and healthcare professionals more easily recognise the available treatment options for type 2 diabetes, the company said.

“Because Ozempic is so well known, people often ask whether there’s an oral option for people with type 2 diabetes, without realising Rybelsus has been available since 2019,” said Ed Cinca, senior vice president of marketing and patient solutions at Novo Nordisk.

Semaglutide tablets at 3 milligram, 7 milligram and 14 milligram doses have been available under the brand name Rybelsus for diabetes since 2019.

The pill is also approved to reduce the risk of certain cardiovascular conditions (heart and blood vessel problems) in adults with type 2 diabetes who are at high risk for these events.

The FDA approved the new doses based on a bioequivalence study (which checks that two medicines act the same in the body) and clinical trial data for Rybelsus, Novo said.

The company expects a decision from the health regulator on a 25 milligram dose of Ozempic tablets by the end of 2026.

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New Alzheimer’s treatments could slow memory loss

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Limiting the PTP1B enzyme could slow memory loss in Alzheimer’s, pointing to a potential treatment route, new research suggests.

The enzyme appears to contribute to memory decline in mice by altering how the brain’s immune cells behave, researchers say.

Dialling down PTP1B let microglia clear the protein clumps linked to Alzheimer’s, known as amyloid-beta plaques. Microglia are the brain’s resident immune cells that remove waste.

The study was conducted at Cold Spring Harbor Laboratory, a non-profit in New York, where professor Nicholas Tonks has examined the enzyme since discovering PTP1B in 1988.

Microglia normally sweep up waste in the brain but become less effective as Alzheimer’s, which slowly damages memory and thinking, advances.

The research suggests that PTP1B interacts with spleen tyrosine kinase (SYK), which helps control how microglia respond to damage and remove amyloid-beta.

“Over the course of the disease, these cells become exhausted and less effective,” said Yuxin Cen, the study lead.

“Our results suggest that PTP1B inhibition can improve microglial function, clearing up Aβ plaques,” Cen added.

PTP1B is already known to play a role in metabolic conditions such as obesity and type 2 diabetes, both recognised risk factors for Alzheimer’s disease.

The laboratory is now working to develop PTP1B inhibitors for multiple applications.

For Alzheimer’s disease, Tonks envisages a combination of therapies pairing existing approved drugs with PTP1B inhibitors.

According to the World Health Organisation, cholinesterase inhibitors such as donepezil are currently used to treat Alzheimer’s disease, while NMDA receptor antagonists such as memantine are prescribed for more advanced stages.

“The goal is to slow Alzheimer’s progression and improve the quality of life of the patients,” said Tonks.

More than 55 million people live with dementia globally, with Alzheimer’s disease accounting for up to 70 per cent of cases, according to the WHO.

“It’s a slow bereavement,” said Tonks, whose mother lived with Alzheimer’s.

“You lose the person piece by piece.”

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Agetech World research and innovation round-up  

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We round up the latest news in agetech research and innovation, from a human trial in ‘reverse ageing’ to the launch of a domestic longevity pod.

Approval has been secured in the United States for the first human trial targeting ‘reverse ageing’.

Boston-based company Life Biosciences will shortly commence trials of its ER-100 treatment which aims to treat eye disease through reprogramming cells.

It will initially treat around a dozen patients with glaucomas – a condition where high pressure inside the eye damages the optic nerve.

Each patient will receive injections of three powerful genes into an eye in an attempt to restore host cells to a healthier state by resetting their epigenetic controls.

It is over 20 years since Dr Shinya Yamanaka’s Nobel Prize work was first able to convert adult cells into pluripotent stem cells.

This reverse cell-editing process allows the regenerated cells – just like those found in an early embryo – to develop into the different, specialised cell types.

This trial has been approved by the Food And Drug Administration (FDA) after initial trials on animals proved a success.

Michael Ringel, chief operating officer at Life Biosciences, said: “It’s an incredibly big deal for us as an industry.

“It’ll be the first time in human history, in the millennia of human history, of looking for something that rejuvenates … So watch this space.”

Inherited longevity

New research claims that longevity-inheritability accounts for around 50 per cent of human lifespan.

For many decades, scientists had rated genetics as being a relatively low factor in human lifespan – compared to other inherited traits – at between 10 per cent and 25 per cent.

However, this new study from the Israeli-based Weizmann Institute of Science, presents an entirely different picture.

Led by Ben Shenhar, a PhD student, from the lab of Prof Uri Alon of Weizmann’s Molecular Cell Biology Department, it analysed three large twin databases from Sweden and Denmark – including a dataset of twins who were raised apart.

The researchers showed that earlier heritability estimates were masked by high levels of extrinsic mortality, such as deaths caused by accidents, infections and environmental hazards.

Their findings are consistent with the heritability of other complex human traits and with findings from animal models.

“For many years, human lifespan was thought to be shaped almost entirely by non-genetic factors, which led to considerable skepticism about the role of genetics in ageing and about the feasibility of identifying genetic determinants of longevity,” said Shenhar.

“By contrast, if heritability is high, as we have shown, this creates an incentive to search for gene variants that extend lifespan, in order to understand the biology of aging and, potentially, to address it therapeutically.”

Longevity blood test

In just a few years a simple blood test should be sufficient to gauge one’s anticipated longevity, claims Dr Tan Min-Han, chief executive and medical director of Singapore and Californian-based firm Lucence.

Dr Tan believes people will be able to go to a clinic near them to take a simple blood test that can detect early signs of ageing.

The results could guide lifestyle changes, such as sleep, diet and exercise, to improve key biomarkers and slow physical decline.

Lucence was founded in 2016 as a spin-off from Singapore’s Agency for Science, Technology and Research. While incorporated and headquartered in Singapore, the company also maintains a co-headquarters in Palo Alto, California.

Since then, it has secured more than US$80m in equity funding, including US$20m in a 2019 funding round led by IHH Healthcare.

He said: “Blood tests are more acceptable and accessible as opposed to uncomfortable procedures like mammograms and colonoscopies. I believe that technology could make a lot of this better.

“Five years ago, being able to detect cancers from blood tests was science fiction. But now, we have made that a reality.”

Longevity pod

A domestic longevity pod known as the E-Salt Cabin has been launched by Eleve Health, a California-based wellness technology company

Roughly the size of a compact car – at just over eight and a half feet long – the pod combines four core therapies: halotherapy, red light therapy, oxygen delivery, and aromatherapy.

Halotherapy disperses a fine, mineral-rich mist designed to support respiratory health. Red light therapy stimulates cellular repair and regeneration. Oxygen delivery aims to improve circulation and energy levels. And custom essential oil blends add a sensory layer

The company says it can be used as a tool to ‘support circulation, clarity, and recovery within a residential setting’.

Eleve said: “The pod reflects a broader shift among ultra-high-net-worth homeowners, with wearable technology, circadian lighting, biophilic interiors, and curated soundscapes becoming standard.”

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