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Aging

This shows the outline of people and brains.

·January 13, 2025·6 min read

Almost Half of Americans Over 55 Face Dementia Risk

New research finds that the lifetime risk of dementia after age 55 in Americans is 42%, significantly higher than previous estimates. Women face a higher risk (48%) than men (35%) due to their longer life expectancy. Risk factors include genetic predisposition, hypertension, diabetes, obesity, and limited physical activity.

This shows an older woman doing a crossword.

Featured Neurology Neuroscience

·January 13, 2025·5 min read

Indoor Temperatures Affect Cognitive Function in Older Adults

A new study reveals that older adults experience the least attention difficulties when home temperatures remain between 68–75 ˚F (20–24 ˚C). Deviations beyond this range double the risk of attention lapses, highlighting how even current climate conditions may harm cognitive health.

Featured Genetics Neurology Neuroscience

·January 9, 2025·6 min read

Brain Cell Genetics Shape Aging and Alzheimer’s Risk

Researchers have identified genetic variations in brain cells, particularly microglia and oligodendrocytes, that influence both aging and Alzheimer’s risk. These variations impact how cells function as they age, potentially priming some individuals for dementia.

Featured Neuroscience Psychology

·January 8, 2025·4 min read

Early Reproductive Aging Alters Brain Connectivity, Emotional Health

Research shows that accelerated reproductive ageing in females, such as early puberty or menopause, is linked to increased mental health risks at different life stages. Adolescents experiencing early puberty displayed unstable brain connectivity in regions tied to psychosis vulnerability, while middle-aged women with early menopause showed patterns linked to depression.

Featured Neurology Neuroscience

·January 7, 2025·4 min read

Vascular Risk Factors Affect Brain Health Differently in Older People

A new study reveals that common cardiovascular conditions like high blood pressure and diabetes, known to damage brain blood vessels in younger populations, are not linked to increased brain vessel harm in individuals aged 90 and older. Researchers analyzed data from 267 participants in the National Institute on Aging’s 90+ Study and found no significant relationship between these risk factors and brain changes in this age group. Interestingly, blood pressure-lowering medications such as diuretics and beta blockers were associated with reduced risks of specific brain conditions, suggesting potential protective effects.

Featured Neuroscience

·January 5, 2025·6 min read

Mapping How Aging Affects Different Brain Cells

New research shows that not all brain cells age equally, with certain cells, such as those in the hypothalamus, experiencing more age-related genetic changes. These changes include reduced activity in neuronal circuitry genes and increased activity in immunity-related genes.

Featured Genetics Neuroscience

·December 21, 2024·8 min read

Rare Brain Cells Offer Clues to Aging and Rejuvenation

A study reveals how brain cell interactions influence aging, showing that rare cell types either accelerate or slow brain aging. Neural stem cells provide a rejuvenating effect on neighboring cells, while T cells drive aging through inflammation.

Featured Neuroscience

·December 20, 2024·5 min read

Structural Sexism Tied to Faster Memory Decline in Older Women

Women born in states with higher structural sexism experience faster memory decline later in life, with effects equivalent to nine years of cognitive aging. Structural sexism encompasses societal inequities like unequal labor force participation and underrepresentation in government, which create systemic barriers to health. The impact is particularly pronounced among Black women, highlighting the intersection of sexism and racism.

Featured Neurology Neuroscience

·December 20, 2024·5 min read

AI Estimates Brain Age, Links Lifestyle to Cognitive Health

Researchers used AI to analyze brain images from 70-year-olds, estimating their biological brain age and uncovering connections to lifestyle and health factors. Diabetes, inflammation, and high glucose levels were linked to older-looking brains, while regular exercise and healthy habits were associated with younger-looking brains.

Featured Neuroscience

·December 19, 2024·5 min read

70 Is the New 60: Age Related Declines Slowing in Older People

study highlights significant improvements in the physical and mental functioning of older adults in England compared to previous generations. Using data from the English Longitudinal Study of Aging, researchers found that advancements in education, nutrition, sanitation, and medical care have likely contributed to better health outcomes. For instance, a 68-year-old born in 1950 exhibited similar capacities to a 62-year-old born a decade earlier.

Featured Genetics Neuroscience

·December 13, 2024·5 min read

Clues to Longevity, Fertility, and Aging Found in Our DNA

A new review explores the genetic factors influencing reproductive health, fertility, and life expectancy. Researchers identified 37 key genes linked to traits such as age at first childbirth, menopause timing, and hormone levels, highlighting genetic connections to broader health outcomes.

Featured Neurology Neuroscience Neuroscience Videos

·December 10, 2024·5 min read

Diets That Reduce Brain Iron May Delay Cognitive Decline

New research suggests that certain nutrients may lower iron buildup in the brain, a factor linked to cognitive decline in aging. Excess non-heme iron, which accumulates over time, contributes to oxidative stress and can impair memory and executive function.

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Aging

Almost Half of Americans Over 55 Face Dementia Risk

Indoor Temperatures Affect Cognitive Function in Older Adults

Brain Cell Genetics Shape Aging and Alzheimer’s Risk

Early Reproductive Aging Alters Brain Connectivity, Emotional Health

Vascular Risk Factors Affect Brain Health Differently in Older People

Mapping How Aging Affects Different Brain Cells

Rare Brain Cells Offer Clues to Aging and Rejuvenation

Structural Sexism Tied to Faster Memory Decline in Older Women

AI Estimates Brain Age, Links Lifestyle to Cognitive Health

70 Is the New 60: Age Related Declines Slowing in Older People

Clues to Longevity, Fertility, and Aging Found in Our DNA

Diets That Reduce Brain Iron May Delay Cognitive Decline

Ultra-Processed Foods Erodes Visual Attention

Why Feeling Good is Harder than Not Feeling Bad

Astrocytes Identified as Key Target for Treating Fragile X Syndrome

Liver Talks to the Brain to Control Appetite

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