New! Sign up for our free email newsletter.
Reference Terms
from Wikipedia, the free encyclopedia

Brain tumor

A brain tumor is any intracranial mass created by an abnormal and uncontrolled growth of cells either normally found in the brain itself: neurons, glial cells (astrocytes, oligodendrocytes, ependymal cells), lymphatic tissue, blood vessels), in the cranial nerves (myelin producing Schwann cells), in the brain envelopes (meninges), skull, pituitary and pineal gland, or spread from cancers primarily located in other organs (metastatic tumors).

Related Stories
 


Health & Medicine News

October 4, 2025

Scientists discovered that vitamin D2 supplements can lower levels of vitamin D3, the form the body uses most effectively. Unlike D2, vitamin D3 enhances the immune system’s first line of defense against infections. This raises questions about ...
A Weill Cornell Medicine team has found that triple-negative breast cancer depends on the enzyme EZH2 to spread. By silencing key genes, EZH2 drives chaotic cell divisions and fuels metastasis. Blocking EZH2 restored stability and prevented cancer ...
Metabolic dysfunction-associated steatotic liver disease (MASLD) affects over a third of the global population and is linked to serious health problems. A new study has revealed that high blood pressure, diabetes, and low HDL cholesterol are the ...
A Scandinavian clinical trial has revealed that low-dose aspirin can halve the risk of colon and rectal cancer recurrence in patients with specific genetic mutations. The research, involving over 3,500 patients, is the first randomized study to ...
New research from Houston Methodist reveals how obesity may directly drive Alzheimer’s disease. Scientists discovered that tiny messengers released by fat tissue, called extracellular vesicles, can carry harmful signals that accelerate the buildup ...
A massive nationwide study has linked long-term exposure to the industrial chemical trichloroethylene (TCE) with a higher risk of Parkinson’s disease in older adults. Researchers examined over 1.1 million people, finding that those living in areas ...
Ohio State researchers have discovered that exhausted T cells collapse under the weight of misfolded proteins, activating a destructive stress response called TexPSR. Unlike normal stress systems, TexPSR accelerates protein production, flooding the ...
Flu detection could soon be as simple as chewing gum. Scientists have created a molecular sensor that releases a thyme-like flavor when it encounters influenza, offering a low-tech, taste-based alternative to nasal swabs. Unlike current tests that ...
A massive NIH-backed study reveals that COVID-19’s toll on smell may be more widespread and lasting than most realize. Even patients without noticeable symptoms often performed poorly on scent tests, raising safety and health concerns. Because ...
New research shows that poor sleep could make the brain appear years older than it really is. Using MRI scans and machine learning, scientists found a clear link between unhealthy sleep patterns and accelerated brain ...
Penn researchers found that psilocybin can calm brain circuits tied to pain and mood, easing both physical suffering and emotional distress in animal studies. The compound works in the anterior cingulate cortex, bypassing injury sites and offering a ...
BMJ Group has pulled a widely reported apple cider vinegar weight-loss study after experts uncovered major flaws in its data and analysis. Attempts to replicate the results failed, and irregularities raised questions about the trial’s reliability. ...

Latest Headlines

updated 12:56 pm ET