what causes brain tumors?
368957
brain tumors, like any tumors, are caused by uncontrolled cell division and reproduction.  this is most usually caused by the combination of extreme toxins, carcinogens, and the breakdown of the body's immune system.  certain substances have also been linked to development of brain tumors, like MSG.  ingesting substances like that on a regular basis, coupled with a weakened immune system will probably lead to a brain tumor.
1076586
There are a ton of reasons why you may have headaches.   It could be stress, vision problems, even jaw problems.  These are the most common causes.  Rarely, very, very, rarely is it from a tumor or something in the head.  And usually there are other symptoms that would go along with a tumor.  If these headaches are bad enough to bother you, you should absolutely go to the doctor and just make sure everything checks out.  Good Luck!
289268
Technically yes, since a "Tumor" means a "swelling" and a blow to the head can cause a bump. \n\nIf you, however, mean cancerous growth (which is probably what you are talking about), then no.
620261
Tumors are just cancerous masses.  There are many, many possible causes of cancer, most of which are not well understood.  It could be a genetic predisposition (such as a mutation in the p53 gene).  Or it could be due to environmental factors (carcinogens ingested or absorbed by breathing).  It could also be caused just by plain old bad luck.  Cellular processes are VERY complex, and things don't always proceed according to plan.  Occasionally things get screwed up and the cell division is no longer regulated properly.  I wish there was an easy answer for you, but unfortunately we have chosen the word "cancer" to describe many different conditions that have similar characteristics.  All cancers are conditions in which cell proliferation has gone out of control (i.e., the cells won't stop dividing).  However, the causes of cancer are too numerous to mention, and we probably haven't identified them all.  Plus, cancer can occur in so many different types of tissue, and the pathology of each type of cancer may differ.  However, if the cancerous cells are picked up by the circulatory system, they can spread around the body (metastisis).  The cancerous cells may end up somewhere else in the body and induce a new tumor to form.  One of the scariest situations is when the cancer spreads to the lymph nodes.  Lymphomas are cancers of the immune cells (which aggregate in the lymph nodes).  These cancers affect your body's ability to fight all infections, so they are particularly deadly, whereas melanomas (skin cancers) are quite treatable and rarely result in death.  Brain tumors are extremely dangerous for obvious reasons.  Any brain damage will have drastic effects; plus, it's very difficult (sometimes impossible) to perform the surgery required to remove a tumor from the brain.
544448
WebMD is a good website.  However, it is NOT true that only doctors can have an informed opinion on this.  I am a research biologist who studies cancer in my laboratory.  So, I think my opinion is valid even though I am not a Medical Doctor.  Please see my answer on your previous question for a more thorough explanation of the causes of cancer.\n\nRadiation is known to induce mutations, which can then result in cancer.  However, it is NOT clear whether the radiation dosage from power lines or cell phones is sufficient to cause cancer.  I suspect it is NOT or else we would be experiencing a cancer epidemic in America.
285393
can be caused by any number of things if anything on or in brain MRI should find it good luck
421283
Three causes of melanoma, huh?  I would venture to say: 1.) Sunburn  2.) A congenital melanocytic nevus (mole) 3.) Repeated chemical or mechanical trauma to the skin.  Your best bet is to run a search for "melanoma".
334444
Every mobile phone has a transmitter and a reciever in it, the signals orperate by microwave. The disruption of the microwaves passing through your brain to the reciever and out again to transmit can make you more likely to have tumors. The waves can disrupt your DNA sequence which is what starts tumors developing. It's the same sort of principle for living too close to powerlines, prolonged exposure can be dangerous. They can sometime interfere with electronics the same way but instead of tumors they creat signal blockages. That is why you're asked to turn them off on flights.
326833
Yeah, because gas has lead and cadmium which is carcinogenic and causes the mutation of cells when incorporated into the body then that's how you get cancer.
335877
Tumors have a number of obnoxious effects. I shall assume that you mean cancerous tumors, here, though some of this would apply to benign tumors, too.\n\nFirst of all, the tumor--whether benign or malignant--takes resources away from other tissues.  What the tumor takes, it takes away from all else.  It's being the biological equivalent of a power drain.\n\nNext, as it grows, the tumor can push on healthy structures--again, that's whether it's benign or malignant.  Depending on where they are, they can impair blood flow, lymphatic return, swallowing, emptying of the stomach (Or anything else), they can sometimes cause seizures, weaken bones, block off breathing, etc.  Oh, and if they're visible, they can be cosmetically disfiguring.\n\nSpecifically with malignant tumors--read that cancer, if you please--they can and often do spread elsewhere, the presence of the "daughter tumors" (Doctors call them metastases) causing an increase in the metabolic load and an increase in the number of places that get squeezed on.\n\nMoreover, many cancers produce chemicals of control--polypeptide hormones, like gastrin or insulin or antidiuretic hormone or cortisone or parathormone or, oh enough--that can play merry hob with the metabolism...\n\nThat's what comes to mind off the top of my ol' head...
1101616
(m)\n\nNanotechnology Tackles Brain Cancer\n \n   \n\n Brain cancer can be counted among the most deadly and intractable diseases. Often diagnosed after a patient exhibits symptoms such as nausea, dizziness, uncharacteristic behavior changes, or paralysis, the growing mass of a brain tumor will continue to squeeze out normal tissue and degrade the brain’s function if left untreated. But treatment is elusive. Tumors may be embedded in regions of the brain that are critical to orchestrating the body’s vital functions, while they shed cells to invade other parts of the brain, forming more tumors too small to detect using conventional imaging techniques. Brain cancer’s location and ability to spread quickly makes treatment with surgery or radiation like fighting an enemy hiding out among minefields and caves, and explains why the term “brain cancer” is all too often associated with the word “inoperable.” \n\nMaking treatment even more challenging, there is a system of blood vessels and protective cells in the brain — the blood-brain barrier — that admits only essential nutrients and oxygen, and keeps out everything else, including about 95 percent of all drugs. This natural barrier puts serious limits on how much a patient can benefit from traditional chemotherapy and new cancer drugs. \n\nIn an ideal situation, we would have a “smart” drug that could cross the blood-brain barrier, zero in on the cancer cells, mark their location clearly for surgery, or destroy them with such precision that it would leave surrounding, normal brain cells intact. Until now, such a scenario seemed so far-fetched. But using nanotechnology, NCI-supported researchers at the University of Michigan, the University of Washington, the University of Texas M. D. Anderson Cancer Center, Virginia Polytechnic Institute, and Virginia Commonwealth University are creating ultrasmall particles that can target and destroy cancer cells in the brain, even those in tumors too small to be removed surgically.
34835
blood pressure.  blood sugar.  nerve damage as a side effect of medication.  brain hemmorages.  stroke.  brain tumor.  viruses.  infection.  hunger.\n\ngo to the doctor!!!!
882508
The most common symptoms include headaches, which can be most severe in the morning; nausea or vomiting, which can be most severe in the morning; seizures or convulsions; difficulty thinking, speaking, or finding words; personality changes; weakness or paralysis in one part or one side of the body; loss of balance; vision changes; confusion and disorientation; and memory loss. Different parts of the brain control different functions, so symptoms will vary depending on the tumor’s location. \n\nWhile these are the most common symptoms of a brain tumor, they can also indicate other medical problems. If you are having any of these symptoms, it is important to see your doctor and get a definitive diagnosis.\n\nHey Lady!\nTry fol linx, u'll find many things of ur interest.\n\n\n{When ever u need to know about some thing write its name in any search engine and press enter...........}
192937
I have not seen anything written about PROOF that cell phones cause brain cancer.  But medical research has proven that cell phone users have a higher rate of benign brain tumors called acoustic neuromas.  You can get more information at the links below....
182137
What causes epilepsy? \n\nEpilepsy is caused by abnormal electric impulses in groups of nerve cells (neurons) found in the brain. For diagnostic purposes, epilepsy is divided into two main groups\n\nIdiopathic epilepsy \n\n(From Greek idos = self.) In cases of this type, the cause is unknown. However, it is believed that attacks are caused by the lack of a particular group of chemical substances (the neurotransmitters) used to regulate the electric impulses in the brain. \n\n\nThere may be an hereditary (genetic) background, since epilepsy of the same type is often seen among relatives. Moreover, EEG irregularities similar to those of the patient are often seen among family members, even if they do not suffer from epilepsy - a kind of genetic mark. New research has shown that certain cases of idiopathic epilepsy are clearly hereditary, caused by chromosomal abnormality. \n\n\nThe patient has no other signs of neurological illness or mental defects. CT and MRI scans are normal. \n\nSymptomatic epilepsy \n\nEpilepsy of this type is caused by a known illness in the brain. \n\n\nEpilepsy triggers \n\nNumerous illnesses or types of brain damage can cause epilepsy. The following are the most common.\n\n\nDevelopmental anomalies\n\nDamage occurring to the brain as it develops during the first three months of pregnancy. This can be revealed by modern MRI scans and causes many of the difficult-to-control cases in children. On the other hand, damage inflicted during delivery (cerebral palsy) is fairly uncommon.\n\n\nTrauma to the skull\n\nUnlike ordinary concussion, trauma can be so serious that the patient is admitted to a neuro-surgical ward. The possibility of epilepsy following trauma varies from 5 to 50 per cent, with the highest risk following a depressed skull fracture where the brain tissue has been partly damaged, or a gunshot wound to the head. \n\n\nBlood clots (infarcts) and haemorrhages in the brain\n\nAbout 10 per cent of all brain infarcts cause epilepsy. \n\n\nBrain tumours\n\nEspecially slow-growing superficial tumours. Since these can be surgically removed, it is important to check for these if a patient develops epilepsy, especially if the attacks start in a limited part of the brain (focal attacks - consult the article on the types of attacks). The most important techniques are CT scans and MRI scans. \n\n\nEncephalitis\n\nProlonged seizures and fever convulsions could induce brain damage. \n\n\nAlcohol abuse\n\nMay cause epilepsy as a result of the cramps associated with delirium tremens. In certain cases, an MRI scan reveals abnormalities in the brain, but no evidence of neurological illness. Such cases are called cryptogenic (from Greek: kryptos = hidden).
731767
LOLOLOL\n\nHave YOU actually tried researching this yourself?  If so, you'd know that there have never been any documented cases of someone getting a brain tumor from watching TV.
95272
Malignant cells cause cancer. Cells become malignant for a lot of reasons, some of them known, some of them unknown. Some viruses, carcinogenic materials, and genetic mutations are some possible causes.