The facts contained here are primarily in relation to Benign Meningioma, these concerns should be seen as potential growth factors for all tumor types.
Malignant (Cancerous) tumors grow fast as they spreads to other parts of the body, with lethal consequences when not treated fast enough and with the right treatments. Benign (non-Cancerous) tumors growing at a slow rate can be just as harmful, especially within the brain where the smallest growths can be dangerous. It is for this reason that in 2002, The Benign Brain Tumor Cancer Registries Amendment Act (H.R. 5204), was passed mandating registration of benign brain tumors such as meningioma in the United States. As a result of this studies have been done to understand these tumors better. [Wiemels, 2010]
While there are different tumors for NF2, Meningioma were the primary focus of the primary citation for this page. A Meningioma is an encapsulated tumor and when they grow result in pressure to the surrounding brain area. These tumors grow as a result of different conditions, but the majority of these tumors are found in individuals with NF2. Variables that result in increased tumor growth, was at a higher rate when found in individuals with NF2 in comparison to when found and monitored for individuals without NF2 and these tumors grow faster in women over men.[Wiemels, 2010]
Tumor growth rates can vary dramatically. Different growth rates are the results of:
NF2 results in a loss or damage of or a dysfunctional NF2 gene which results in a lack of the MERLIN protein, NF2 a tumor suppressor gene, but development and growth rate of tumors is determined based on each individual's exact NF2 mutation. Therefore, tumors will automatically grow at some rate by natural life progression regardless of environmental variables and lifestyle variables. While an individual's exact mutation determine location of tumor growth and a general rate of growth, environment variables can play a role in actual growth.
From first to second generation NF2, an individual might have more tumors and faster growth than parents; by third generation general growth pattern would be about the same. Symptoms dealt with would be different, if a person might have genetics to grow tumors in the spine as damage at each vertebra would result in different actual issues. But understanding of environmental variables could help a person ultimately have a slower rate of growth than other NF2 family.
The variables discussed here may affect not just people who have the NF2 condition, but other tumor growth issues that also develop because of a mutated tumor suppressor gene.
All of these things are topics that require more research.
NF2 tumors have three different potential growth patterns; Sporadic, Linear, Exponential and can become simply become Dormant..
Different growth patterns would likely apply to different tumors in the same individual from year to year. Even a strong MRI with contrast could miss slow growth and even if no or slow growth is seen, should not be a factor in frequency of scans.
Tumors are most frequently in need of treatment based on issues the tumor is causing, but sometimes tumors are in need of treatment based on location and extent of danger if even minimal growth occurs, like a tumor causing pressure to the brainstem.
While individual tumor management is primarily based on issues a patient notes from tumor changes, some tumor intervention is based on tumor size, location and noted growth rate an individual might not have symptoms until it is too late. For this reason, it is important to follow up with regular MRI scans.
Proven increase in Meningioma growth following high dose exposure of ionizing radiation, including; Atomic Bomb Survivors, Radiation Therapy, full-mouth Dental Radiographs, full-mouth Dental X-rays and Computed Tomography scans (CT Scans). [Wiemels, 2010]
There are 2 forms of radiation; Ionizing and Non-Ionizing, the Non-Ionizing are accepted safe forms.
It can cause damage to matter, particularly living tissue. At high levels it is therefore dangerous, so it is necessary to control our exposure.[World Nuclear News]
Magnetic Fields including MRIs, Ultrasound, Light, Infrared, Radio Waves, Microwaves, Cell Phones and Cell Towers.
Proven increase in Meningioma growth during the peak reproductive years (age 23 to 35), the presence of estrogen, progesterone, and androgen receptors, certain phase of the menstrual cycle and pregnancy. As of 2010, there was not enough data for definitive results for oral contraceptives or hormone replacement therapy (HRT). [Wiemels, 2010] Meningioma growth during pregnancy has since been concluded to be a result of blood flow changes for infant development, not hormonal, Haemodynamic Response.[Wiemels, 2010]
Hormone Risk Summary; Estrogen, Progesterone, both used in Birth Control Pills and Menopause treatment and Androgen Receptors for increased Testosterone levels.
Other Risk Factor Pregnancy can cause tumor growth increases at different stages of pregnancy, but is not a result of hormones. Tumor growth during pregnancy is a result of Hemodynamic Changes. Hemodynamic changes are changes during pregnancy of blood flow in different areas of the body to support the fetus.
The term Diet, refers to combinations of foods eaten or specifically avoided, some examples would be; Vegetarian, Vegan, Ketogenic and Mediterranean. There was not enough information collected for effects on Benign tumors in the report done for the Benign Brain Tumor Cancer Registries as of 2010, with a note of more information needed. Additional follow-up on specific food concerns were not mentioned.[Wiemels, 2010]
Tumor changes from; Animal Growth Hormones (rBGH), Genetically Modified Food (GMO), BPA (Bisophenal A) and Pesticide use have been ongoing concerns for the creation and growth of tumors of all types for several years.
Growth hormones given to animals, is a topic that requires more research. Cows are given Recombinant Bovine Growth Hormone (rBGH), also known as Recombinant Bovine Somatotropin (rBST). The clear results and purpose of rBGH are faster-maturing animals for meat as well as more milk production, fewer animals to feed more people. However, these hormones could result in health risks, including tumor growth. There has been enough scientific research to result in debates worldwide. These debates are leaving many consumers looking for Organic food options.
To purchase Organic foods look for the U.S. Department of Agriculture seal of approval, other terms might be used, but only the seal can be trusted.
BPA, Bisophenal A, is found in plastics listed as a recyclable plastic of Resin ID Code #7. However; it is also found in cans since cans are lined with plastic on the inside, an alternative to prevent plastic or metal in foods, consider foods in glass jars instead of cans. BPA mimics Estrogen. (Read Hormonal concerns above).
Pesticides are chemicals sprays on crops to repel insects, other unwanted animals and also results in less produce lost due to decay. There are different forms. While Organic produce are even protected with sprays, the Organic produce are only sprayed with a combination of Canola Oil and Baking Soda is a safer combination in comparison to the neurotoxins in the non-Organic spray forms.
Pesticides have been linked to Cancer, Alzheimer's Disease, ADHD, and even birth defects. Pesticides also have the potential to harm the Nervous System.
It is not known if Antioxidants as dietary supplements, or if this may also apply to Antioxidants eaten in excess.[National Cancer Insistute, 2015]
More information needed, but there have been ongoing concerns for the following:
If it is a matter of either air exposure or surgery of remaining tumor matter after surgery, does not matter. It is important to be aware that remaining tumor matter of even a few cells are likely to grow at an increased rate following surgery. [(Demicheli, 2008); (Southall, 1998)]
Some occupations put employees at risk and direct exposure to different radiation and chemicals; in the United States this is no longer an issue as a result of government regulations to protect employees. [OSHA]
As of December 29, 1970 the Occupational Safety and Health Act was signed to protect workers' safety and health. The purpose of the legislation was to "assure so far as possible every working man and woman in the Nation safe and healthful working conditions". [OSHA]
The United States Department of Labor called the Occupational Safety and Health Administration (OSHA). OSHA establishes rules to protect workers that must be enforced. [OSHA] The only exception to this is for individuals handling pesticides without following proper safety precautions.
Individuals with either of the following in their immediate area would be at an increased risk of tumor growth:
Conflicting data in studies done, more research is needed. [Wiemels, 2010]
Second hand cigarette smoke, breathing in smoke of others, is said to cause the same amount of damage to a person as smoking cigarettes. Today damage from second hand smoke is less likely as many locations no longer allow indoor smoking.
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