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circadian rhythm

This shows a woman working late at night.

Brain Cancer Featured Neurology Neuroscience

·December 26, 2025·8 min read

Working Nights May Increase Cancer Risk

Chronic circadian disruption — such as night-shift work, irregular schedules, or frequent jet lag — accelerates the development and spread of aggressive breast cancer. Researchers found that disrupted internal clocks not only weaken immune defenses but also reshape healthy breast tissue, creating conditions that tumors exploit.

Brain Cancer Featured Neurology Neuroscience

·December 15, 2025·5 min read

Cancer Disrupts the Brain’s Internal Clock

Breast cancer can rapidly derail the brain’s day-night regulation of stress hormones, even before tumors are detectable. In mice, the disease flattens normal corticosterone rhythms by altering hypothalamic neuron activity, which may worsen outcomes and mimic symptoms often seen in cancer patients, such as insomnia and anxiety.

This shows a person laying awake in bed and a brain.

Featured Neuroscience

·December 1, 2025·5 min read

Insomnia Keeps the Brain Stuck in Daytime Mode

People with chronic insomnia show a delayed and weakened daily rhythm of mental activity, keeping the brain in a more alert, daytime-like state at night. Under tightly controlled conditions, individuals with insomnia failed to show the normal nighttime drop in goal-directed thinking seen in healthy sleepers.

This shows a brain with a night and day background.

Featured Neuroscience

·November 13, 2025·6 min read

Brain Learning Power Peaks at Specific Times of Day

A new study reveals that the brain’s responsiveness and capacity for learning shift with the time of day, governed by molecules like adenosine that link metabolism, sleep, and neural signaling. Using optogenetics, researchers found that identical stimuli activated brain cells differently at sunrise versus sunset, suggesting that neuronal excitability and plasticity follow daily rhythms.

Featured Genetics Neurology Neuroscience

·October 24, 2025·7 min read

Alzheimer’s Disrupts Brain’s Internal Clock, Unraveling Gene Rhythms

Alzheimer’s disease not only damages memory but also distorts the brain’s internal clock, disrupting the daily rhythms of hundreds of genes tied to brain health. Researchers found that in mice with amyloid buildup, normal circadian gene activity in microglia and astrocytes—the brain’s immune and support cells—became erratic.

This shows the outline of a head and a clock.

Brain Cancer Featured Neurology Neuroscience

·September 8, 2025·2 min read

Chemotherapy Drug Found to Disrupt Circadian Clock

Nearly half of cancer patients suffer circadian rhythm disruptions during chemotherapy, worsening side effects. A new study using mice shows that paclitaxel, a common breast cancer drug, may disturb the brain’s master clock without directly entering it.

This shows a mom holding a baby with a clock in the background.

Featured Neuroscience

·September 6, 2025·5 min read

Breast Milk Has a Built-In Body Clock for Babies

Breast milk is more than nourishment—it delivers circadian cues that may shape infant sleep, immunity, and metabolism. Researchers analyzing milk samples found that melatonin peaked at night and cortisol in the early morning, while other immune-related proteins remained steady.

This shows a brain and a night time backdrop.

Featured Neuroscience

·August 21, 2025·5 min read

Nighttime Brain Activity Keeps Glucose Levels in Check

A new study reveals that the brain actively maintains blood sugar stability during everyday life, not just during crises. Researchers identified VMHCckbr neurons in the hypothalamus that regulate glucose by promoting fat breakdown, especially during the early hours of sleep.

$This shows the sun and moon.$

Featured Neuroscience

·July 22, 2025·5 min read

Math Reveals Why Sleep Patterns Shift With Age, Light, and Routine

A new study shows how math helps explain why babies nap erratically, teens stay up late, and older adults wake earlier. Researchers expanded the classic two-process sleep model by adding the effects of light exposure, uncovering how internal and external factors interact to regulate sleep.

Featured Genetics Neuroscience

·July 22, 2025·5 min read

How Your Body Clock Stays on Time Despite Temperature Changes

Researchers uncovered how our biological clocks keep a 24-hour rhythm even as temperatures fluctuate. Using physics-based models, they discovered that at higher temperatures, gene activity rhythms become distorted—rising faster and falling slower—to maintain the cycle’s duration.

Featured Neuroscience

·July 9, 2025·6 min read

Artificial Light Undermines Health: Aligning Modern Life With Biological Clocks

New research reveals that artificial light at night disrupts more than sleep, affecting immune function, metabolism, mood, and brain health. Circadian rhythms, finely tuned over millions of years, regulate critical biological processes and can be thrown off by modern lighting and irregular schedules.

Featured Genetics Neuroscience

·July 7, 2025·8 min read

Early Meals Boost Health, but Genetic Clock Shapes When We Eat

Our bodies process food differently depending on the time of day, and eating later has been linked to poorer metabolic health. A study of twins found that those who consumed most of their daily calories earlier had better insulin sensitivity and lower risk factors for diabetes and obesity.

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circadian rhythm

Working Nights May Increase Cancer Risk

Cancer Disrupts the Brain’s Internal Clock

Insomnia Keeps the Brain Stuck in Daytime Mode

Brain Learning Power Peaks at Specific Times of Day

Alzheimer’s Disrupts Brain’s Internal Clock, Unraveling Gene Rhythms

Chemotherapy Drug Found to Disrupt Circadian Clock

Breast Milk Has a Built-In Body Clock for Babies

Nighttime Brain Activity Keeps Glucose Levels in Check

Math Reveals Why Sleep Patterns Shift With Age, Light, and Routine

How Your Body Clock Stays on Time Despite Temperature Changes

Artificial Light Undermines Health: Aligning Modern Life With Biological Clocks

Early Meals Boost Health, but Genetic Clock Shapes When We Eat

Multilingualism Calculator Reveals True Language Strengths

Brain Blends Fast and Slow Signals to Shape Human Thought

Immune Signal Ratio May Predict Progressive Multiple Sclerosis

Early Screen Time Linked to Long-Term Brain Changes, Teen Anxiety

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