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Popular brain supplement linked to shorter lifespan in men
Science News

Popular brain supplement linked to shorter lifespan in men

A large study involving more than 270,000 people has linked higher blood levels of the amino acid tyrosine to a shorter lifespan in men. Using both observational data and genetic analysis, researchers found that elevated tyrosine could potentially reduce male life expectancy by nearly a year, while no significant effect appeared in women. Tyrosine is found naturally in protein-rich foods and is also sold as a supplement for boosting focus and mental performance, making the finding especially intriguing.

📅 2026-09-06 21:21:25    •    ScienceDaily
How bird movements are helping researchers track a global virus
Science News

How bird movements are helping researchers track a global virus

While the highly virulent avian influenza strain has only recently been discovered on Australian shores, researchers at Deakin University have been working behind the scenes for years, anticipating what an outbreak might look like.

📅 2026-09-06 21:00:01    •    Phys.org
Scientists find breast cancer cells hiding behind protective “shields”
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Scientists find breast cancer cells hiding behind protective “shields”

Researchers have mapped breast tumors in striking detail and uncovered hidden pockets of dormant cancer cells that may help explain why cancer can return after treatment. Unlike rapidly dividing cells, these quiet cells can essentially hibernate, allowing them to evade chemotherapy and reactivate later. The team found that they are often surrounded by immune cells and connective tissue cells that may act like a protective shield.

📅 2026-09-06 20:43:10    •    ScienceDaily
This lifestyle program improved cognition 55% more than basic health advice
Science News

This lifestyle program improved cognition 55% more than basic health advice

Older adults at risk of dementia improved their memory and thinking after following lifestyle programs combining exercise, healthy eating, cognitive training, and social engagement. Those who received regular coaching and structured support improved substantially more than participants given general health advice.

📅 2026-09-06 17:07:44    •    ScienceDaily
Six unusual structures identified at Earth's core-mantle boundary with the help of deep learning
Science News

Six unusual structures identified at Earth's core-mantle boundary with the help of deep learning

Since scientists can't drill 2,900 km (1,800 miles) to the boundary between Earth's core and deep mantle, they must use information relayed by seismic waves recorded during earthquakes to study this region. In a new study published in the journal JGR Solid Earth, a group of scientists used deep learning to study a large set of a specific type of seismic wave. The analysis revealed six continuous bands of irregularities at the core-mantle boundary (CMB) that had previously appeared only as sparse patches.

📅 2026-09-06 17:00:01    •    Phys.org
Scientists discover a hidden problem with this popular sugar substitute
Science News

Scientists discover a hidden problem with this popular sugar substitute

Sorbitol, a sugar alcohol commonly used in sugar-free candy, gum, and other low-calorie foods, may not be as harmless as it seems. Researchers at Washington University in St. Louis found that the body can convert sorbitol into a form of fructose in the liver, potentially triggering some of the same harmful metabolic effects linked to fructose.

📅 2026-09-06 15:44:48    •    ScienceDaily
The extinct American 'cheetah' was not a cheetah after all
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The extinct American 'cheetah' was not a cheetah after all

With their slender bodies and long front legs, Miracinonyx trumani—often nicknamed the "American cheetah"—was long thought to be a North American analog of the African big cat. But in a new study published in the journal Current Biology, researchers reveal that the extinct cat was more closely related to pumas. Some populations living near the Arctic preyed almost exclusively on fish, challenging the long-held assumption that these "cheetahs" chased fast-running prey, such as pronghorns.

📅 2026-09-06 15:00:01    •    Phys.org
Extreme pressure turns blue pigment into record-long single-atom copper chains
Science News

Extreme pressure turns blue pigment into record-long single-atom copper chains

As the electronics in our technology keep shrinking, traditional silicon-based chips are approaching their fundamental physical limits. Yet the wires connecting them might be able to shrink beyond conventional dimensions, as scientists have created one of the longest single-atom copper chains to date that could serve as molecular wires.

📅 2026-09-06 14:20:01    •    Phys.org