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David Nield

Articles by David Nield

Memory Loss in Alzheimer's Linked to Problems With The Brain's 'Replay Mode' - ScienceAlert

HealthFebruary 13, 2026

To consolidate memories, our brains replay them during periods of rest as a kind of 'replay mode'. A new mouse study suggests that disruptions to this process could contribute to the memory loss that…...

Sleepless Nights Could Drive Half a Million Cases of Dementia in The US Each Year - ScienceAlert

HealthFebruary 11, 2026

Scientists have attempted to put a number on how many dementia cases could be caused by insomnia each year and their figure is similar to the population of a mid-sized US city. Researchers from seve…...

Breakthrough: Scientists Created a 'Universal' Kidney To Match Any Blood Type - ScienceAlert

HealthFebruary 7, 2026

After a decade of work, researchers are closer than ever to a key breakthrough in kidney transplants: being able to transfer kidneys from donors with different blood types than the recipients, which …...

Bacteria at The Back of Your Eye May Be Linked With Alzheimer's Progress - ScienceAlert

HealthFebruary 6, 2026

A common bacterium usually found in the respiratory system appears to be linked to cognitive decline and Alzheimer's disease when it's present in the retina. Chlamydia pneumoniae often responsible f…...

Yawning Does Something Surprising in Your Brain, MRI Scans Reveal - ScienceAlert

HealthFebruary 6, 2026

Yawning has an unusual and unexpected effect on the flow of fluid protecting the brain, a recent study reveals, though it's not yet clear what the impact of this shift might be. According to researc…...

We Were Wrong About How Much Your Genes Shape Your Lifespan - ScienceAlert

HealthFebruary 4, 2026

Putting aside the risk of an early grave by accident or injury, your genes may have a much greater impact on your lifespan than previously thought, according to an unparalleled study of twin data. T…...

Study Reveals a Turning Point When Men's Heart Attack Risk Accelerates - ScienceAlert

HealthFebruary 3, 2026

Screening for heart attack risk should be happening earlier for men, according to a new study that found the risk of cardiovascular disease starts climbing when men are in their mid-30s significantly…...

Sleep Loss Is Physically Damaging Your Brain Cells, Study Suggests - ScienceAlert

HealthFebruary 1, 2026

A study led by researchers at the University of Camerino in Italy found that the fatty insulation protecting neurons can be harmed when we go without sleep, compromising our mental processing. Throu…...

Mouse Study Flags a Serious Downside to Popular Weight-Loss Diet - ScienceAlert

HealthJanuary 31, 2026

The high-fat, low-carb ketogenic diet has been growing in popularity in recent years, following claims of rapid weight loss. But new research in mice suggests there are some seriously concerning side…...

10,000 Brain Scans Reveal Why Your Memory Gets Worse With Age - ScienceAlert

HealthJanuary 29, 2026

Our episodic memory the ability to recall past events and experiences is known to decline as we age. Exactly how and why has remained something of a mystery, and a recent study goes some way towards …...