Nervous System

The nervous system is an organ system containing a network of specialized cells called neurons that coordinate the actions of an animal and transmit signals between different parts of its body. In most animals the nervous system consists of two parts, central and peripheral. The central nervous system contains the brain and spinal cord.

What is the Nervous System?

The nervous system is a complex network of neurons and cells that carry messages to and from the brain and spinal cord to various parts of the body.

Bioelectronic Medicine: Hacking Nervous System Signals for Therapeutic Benefits

Function of the Nervous System

Development of the Nervous System

What are Schwann Cells?

The Impact of Hormones on the Nervous System

Pathology of the Nervous System

Latest Nervous System News and Research

Cardiometabolic diseases remain leading cause of excess American mortality

Between 1999 and 2022, the US had substantially higher death rates than other wealthy nations, largely due to cardiovascular disease, metabolic diseases (including diabetes), Alzheimer's disease and related dementias, and drug and alcohol complications.

8 May 2026

Scientists uncover cellular mechanism behind rare childhood brain disorders

Thousands of times per year, a family's moment of joy turns to unexpected grief. A seemingly healthy infant stops smiling or making eye contact.

8 May 2026

Study challenges assumptions about testosterone’s role in brain cancer

Scientists have long suspected that androgens, male sex hormones like testosterone, may help tumors grow because the hormones can suppress immune responses to some cancers.

8 May 2026

New brain findings open pathways for understanding behavioral and neurological disorders

When danger lurks, instinct keeps us safe. It compels us to run from a burning building or wrestle a knife-wielding attacker to the ground. It also adjusts our body physiology to support these behaviors.

8 May 2026

Garlic-derived compound may help improve muscle strength during aging

Can a compound derived from a common kitchen ingredient help support muscle health during aging? A new study suggests it can.

7 May 2026

Methylmercury may harm metabolism beyond its known neurological effects

Methylmercury can accumulate in water environments and enter the food chain. Human exposure is of particular concern in communities affected by contaminated rivers, industrial pollution, artisanal gold mining and environmental disasters.

7 May 2026

CGRP inhibitors may reduce glaucoma risk among migraine patients

A type of drug used to prevent migraine may be associated with a reduced risk of glaucoma, according to a study published May 6, 2026, in Neurology®, the medical journal of the American Academy of Neurology.

6 May 2026

Obesity and Alzheimer’s linked through early metabolic disruptions

By 2030, the population in the United States aged 65 and older is expected to reach 71 million or about 20% of Americans. This growth is likely to increase the burden of age-related diseases, particularly Alzheimer's disease (AD), affecting about 1 in 9 adults over 65.

5 May 2026

New insights into ALS progression through glial cell behavior

All the core facilities of the Cibio Department of the University of Trento are involved in a study on ALS, co-funded by Fondazione AriSla, national organizations and various donors, to better understand the molecular mechanisms of slow-progressing cases.

5 May 2026

NIH awards $3.9 million grant to develop a non-opioid pain treatment

The National Institute of Neurological Disorders and Stroke, part of the National Institutes of Health (NIH), has awarded a $3.9 million grant to a multi-institutional team led by scientists at Sanford Burnham Prebys Medical Discovery Institute to develop a non-opioid pain therapeutic and advance it into a Phase 1 clinical trial.

4 May 2026

Scientists find that human embryos are vulnerable to COVID

A University of California, Riverside study reports that cells in the earliest stages of human development could be susceptible to infection by SARS-CoV-2, which causes COVID-19, offering new insight into how the virus interacts with developing human tissues and why that may matter for pregnancy research.

4 May 2026

Meth use accounts for nearly 1 in 6 heart attacks, California study shows

Methamphetamine (meth) use accounted for nearly 15% of heart attacks for a decade in a northern California study, published today in the Journal of the American Heart Association, an open access, peer-reviewed journal of the American Heart Association.

30 Apr 2026

Sickness behavior may be a coordinated whole organism immune strategy

Symptoms such as fatigue, loss of appetite, altered sleep, and social withdrawal are often treated as inconvenient side effects of infection.

30 Apr 2026

Single-cell sequencing reveals why some CAR-T therapies succeed while others fail

Single-cell RNA sequencing is giving researchers a clearer view of why some CAR-T cells persist, expand, kill tumors effectively, or become exhausted. The review synthesizes 44 clinical scRNA-seq studies involving 500 patients and highlights how exhaustion, memory, cytotoxicity, clonal diversity, and metabolism may shape CAR-T responses.

30 Apr 2026

AHA calls for lifelong brain health strategy to prevent cognitive decline

The AHA scientific statement calls for a life-course approach to brain health that integrates cognitive, emotional, behavioral, vascular, environmental, inflammatory, sleep, microbiome, and social factors. It highlights how early-life exposures, mental health, pollution, chronic inflammation, poor sleep, gut dysbiosis, and socioeconomic adversity may shape brain resilience and later-life cognitive decline.

29 Apr 2026

Nerve fibers within melanomas found to slow tumor growth

Nerve fibers within melanomas can slow the growth of these tumors, according to a study led by Weill Cornell Medicine investigators.

29 Apr 2026

Emergency settings more likely to initiate risky medications for seniors

Initial prescriptions for medications affecting cognition, such as antipsychotics, are disproportionately likelier to come from acute and post-acute settings such as emergency rooms, hospitals and skilled nursing facilities than they are from doctors' offices, new UCLA research suggests.

28 Apr 2026

Engineered gut bacteria successfully treat metabolic drivers of liver disease

When the liver fails, toxins - such as ammonia - that should be filtered from the blood build up and reach the brain.

28 Apr 2026

Sleep and age shape EEG brain signals during wakefulness

Clinicians use electroencephalography (EEG) to assess brain activity in epilepsy and sleep pathologies, and this powerful tool has shown promise for other conditions.

28 Apr 2026

Molecular map reveals how Down syndrome alters brain development

Scientists at UCLA have created one of the first cellular-resolution molecular maps detailing how Down syndrome alters human brain development before birth - a resource that resolves longstanding contradictions in the field and could lay the groundwork for future therapeutic strategies.

25 Apr 2026