Tag

Biomarkers

All articles tagged with #biomarkers

Beyond Memory Loss: Spotting Early-Onset Alzheimer’s Signs That Aren’t Chalked Up to Forgetfulness
health14 hours ago

Beyond Memory Loss: Spotting Early-Onset Alzheimer’s Signs That Aren’t Chalked Up to Forgetfulness

Memory loss isn’t always the first sign of early-onset Alzheimer’s; many patients first show executive-function, language, vision, or personality changes, which can delay diagnosis. Most cases before 65 aren’t genetic, though about 5% involve gene mutations; roughly 360,000 Americans are affected. Advances in biomarkers—amyloid and tau PET scans, spinal fluid tests, and increasingly blood tests like p-tau217—now allow diagnosis in living patients and could democratize access. Clinicians use detailed histories, MRI, and biomarker results to diagnose and discuss treatments, including monoclonal antibodies targeting amyloid and emerging tau therapies, moving toward biology-based classification and personalized, combination therapies. The LEADS study aids early-onset diagnosis and trial access, underscoring a shift to earlier, biology-driven care for younger patients.

Are Younger Cancers Fueled by Faster Biological Aging?
health2 days ago

Are Younger Cancers Fueled by Faster Biological Aging?

Young adults are seeing rising colorectal and other cancers even as overall rates fall. Research from Team Prospect and Yin Cao links accelerated aging—measured with aging clocks like Horvath’s epigenetic clock and GrimAge—to a higher risk of cancer in those born after 1965. The work suggests biology may age faster in some people, potentially driving earlier, more aggressive cancers, and it highlights efforts to slow aging with therapies targeting senescent cells, NAD+, and other approaches. Meanwhile, cancer screening is evolving, with earlier colonoscopy recommendations (start at 45 for average risk) and new blood-based or imaging screening methods supplementing traditional tests.

One-Hour Brush Test Flags Early Oral Cancer with 95% Accuracy
health2 days ago

One-Hour Brush Test Flags Early Oral Cancer with 95% Accuracy

Researchers tested qMIDS, a painless brush-swab test that analyzes four cancer-linked gene mRNA (plus a control sample) to distinguish oral cancer from benign lesions. In 545 patients, the test achieved 95.5% overall accuracy with false-positive/false-negative rates under 5%, delivering results in about an hour. This non-invasive method could reduce the need for biopsies and enable repeated monitoring, with commercialization anticipated within two years and the study published in Biomarker Research (2026).

Anti-inflammatory eating linked to lower dementia risk, new study finds
health4 days ago

Anti-inflammatory eating linked to lower dementia risk, new study finds

A Swedish study of over 1,800 people aged 60+ followed for up to 15 years found that diets with lower inflammatory potential—rich in vegetables, fruits, nuts, legumes and whole grains and lower in ultraprocessed foods, sugary drinks and red meat—were linked to a reduced dementia risk, including among participants with higher Alzheimer’s biomarkers like p-tau217. While observational and not proof of causation, the findings support a broader brain-health pattern: pair a whole, minimally processed diet with lifestyle factors like physical activity and vascular health, leaning toward Mediterranean-style eating for potential cognitive benefits.

Midlife blood marker may flag dementia risk by age 45
health10 days ago

Midlife blood marker may flag dementia risk by age 45

A Springer Nature study found that elevated blood levels of the biomarker pTau181 in 45-year-olds are linked to self-reported cognitive concerns, suggesting signals of dementia risk may begin in midlife even when standard cognitive tests and brain scans are normal. This could indicate an early window for prevention, but it does not prove future dementia. In the UK, about 1 in 11 people aged 65+ have dementia, with risk roughly doubling every five years after around 70.

PTSD From 9/11 May Accelerate Aging Across Several Organs, New Study Finds
health11 days ago

PTSD From 9/11 May Accelerate Aging Across Several Organs, New Study Finds

A Stony Brook University-led study of 393 World Trade Center responders tested about 18 years after 9/11 and found that those with PTSD showed lasting biological changes in blood proteins and metabolites linked to brain function, immune activity and energy metabolism, with signs of accelerated aging in the heart, kidneys, liver and lungs. The results bolster the view of PTSD as a “whole-body” condition that may raise chronic-disease risk, but the study is observational and limited to a specific cohort, so causality can’t be established and longer-term follow-up is needed.

Depression Shows Brain-Linked Gene Signals in White Blood Cells
mental-health28 days ago

Depression Shows Brain-Linked Gene Signals in White Blood Cells

A study of 1,864 people with major depressive disorder and 1,208 controls found 1,383 genes with altered activity in white blood cells, including 18 synapse-related genes that reliably separated depressed individuals from healthy ones. Seven of these genes were also altered in mood-related brain regions, suggesting a systemic, body-wide link between depression and immune biology. The work is exploratory and does not establish causation, but points to potential blood-based biomarkers and new avenues for research and treatment targeting inflammation.

Alzheimer's preclinical stage reveals three distinct cognitive decline paths
science1 month ago

Alzheimer's preclinical stage reveals three distinct cognitive decline paths

New analysis of 1,629 older adults tracked for up to seven years identifies three cognitive trajectories in preclinical Alzheimer's: stable, slow decline, and fast decline, with about 70% remaining stable over about six years. Baseline biomarkers—higher p-tau217, greater tau burden on brain scans, and smaller hippocampus—predicted faster decline, while the APOE ε4 allele also increased risk. Amyloid presence mattered but was a weaker predictor than tau and brain structure. The findings suggest clinical trials in preclinical Alzheimer's should target likely decliners to improve efficiency, since enrolling many stable individuals can dilute a treatment effect. Predictions are probabilistic, not exact, and researchers call for more biomarkers and refined models to guide trials and prognosis.

The Longevity Question: Data and Demographics Obscure the Real Limits
science1 month ago

The Longevity Question: Data and Demographics Obscure the Real Limits

Science journalist David Adam reports on Saul Newman’s critique of the upper-limit-to-life debate, arguing that much of what passes for evidence of a hard lifespan bound rests on faulty or unreliably recorded data. Extreme-age records are plagued by pension fraud, clerical errors, and misreporting, casting doubt on claims of mortality plateaus or hard genetic limits. Newman urges calibration of aging biomarkers with physical dating methods (not just paperwork-based estimates) to distinguish biology from administrative error, and calls for understanding the distribution of age-coding mistakes. Until data are anchored in physical measurements, the search for a maximum human lifespan remains unsettled.

Four-week plant-forward diets linked to younger-looking biology in seniors
health1 month ago

Four-week plant-forward diets linked to younger-looking biology in seniors

A 104-person study (aged 65–75) found that four weeks of dietary changes, especially plant-forward diets with about 70% plant protein, lowered biological age as judged by 20 health biomarkers in three of four diet groups; a high-fat omnivorous diet showed no meaningful change. The results suggest short-term dietary shifts can affect aging biomarkers, but are preliminary.

Handheld cancer detector nears home-based early-detection breakthrough
science1 month ago

Handheld cancer detector nears home-based early-detection breakthrough

Researchers at Westlake University in China have unveiled a handheld cancer-screening device that can detect early-stage cancer biomarkers from a single blood drop. Using a compact 3D metamaterial Bound States-in-the-Continuum sensing chip, the device replaces bulky laboratory equipment with a portable chip, LED, and photodetector, enabling at-home or remote testing. In trials with 171 patient serum samples, it achieved 94.9% accuracy for early cancer detection and 92.1% for post-surgery monitoring—far outperforming the standard ELISA method (74.7%). The team also claims mass production of thousands of identical chips per wafer at about $5 per chip. Findings were published in Nature Photonics and demonstrated 10,000x greater sensitivity than ELISA in spotting lung-cancer biomarkers.

Midlife Blood Clues Could Flag Alzheimer's Risk Before Symptoms
science1 month ago

Midlife Blood Clues Could Flag Alzheimer's Risk Before Symptoms

Dunedin Study findings suggest that higher blood levels of pTau181, together with self-reported memory concerns, may reveal Alzheimer's risk as early as age 45, highlighting midlife as a key window for brain health; pTau181 did not correlate with MRI or cognitive tests at 45, and researchers will continue following participants to see how this risk marker evolves.