Cell Phones and Cancer Risk Fact Sheet - National Cancer Institute


phone cancer prevention

external icon Cell phone tips To reduce radio frequency radiation near your body: Get a hands-free headset that connects directly to your phone. Use speaker-phone more often. Division of Cancer Prevention National Cancer Institute Medical Center Drive Rockville, MD For technical or navigational difficulties, contact your internet provider and/or technical support staff. If you are still experiencing difficulty with our Web site, send a message to our. May 30,  · A variety of apps relating to cancer prevention, smoking cessation, diet, nutrition, and weight control are available from major smartphone platforms such as iPhone, Android, Nokia, and BlackBerry. Common behavioral change techniques include providing feedback, goal-setting, self-monitoring, and planning social support and change [ 14 ].

The 10 commandments of cancer prevention - Harvard Health

Cellular cell phones first became widely available in the United States in the s, but their use has increased dramatically since then. Phone cancer prevention with the large and still growing number of cell phone users both adults and childrenthe amount of time people spend on their phones has also risen sharply in recent decades.

Cell phones including smartphones give off a form of energy known as radiofrequency RF wavesso some concerns have been raised about the safety of cell phone use. With respect to cancer, concern focuses on whether cell phones might increase the risk of brain tumors or other tumors in the head and neck area.

Cell phones work by sending signals to and receiving them from nearby cell towers base stations using RF waves. This is a form of electromagnetic energy that falls between FM radio waves and microwaves. Like FM radio waves, microwaves, visible light, and heat, RF waves are a form of non-ionizing radiation, phone cancer prevention. RF waves are different from stronger ionizing types of radiation such as x-rays, gamma rays, and ultraviolet UV light, which can break the chemical bonds in DNA, phone cancer prevention.

At very high levels, phone cancer prevention, RF waves can heat up body tissues. This is the basis for how microwave ovens work. But the levels of energy given off by cell phones are much lower, and are not enough to raise temperatures in the body, phone cancer prevention.

The RF waves from cell phones come from the antenna, which is part of the body of a hand-held phone. The waves are strongest at the antenna and lose energy quickly as they travel away from the phone. The phone is typically held against the side of the head when in use. The phone cancer prevention tissues closest to the phone absorb more energy than tissues farther away, phone cancer prevention.

Different cell phones have different Phone cancer prevention levels. The listed SAR value is based only on the phone operating at its highest power, not on what users would typically be exposed to with normal phone use. Because cell phones usually are held near the head when being used, the main concern has been phone cancer prevention they might cause or contribute to tumors in this area, including:.

A few studies have also looked at possible links to other types of cancer, such as skin cancer and testicular cancer. Lab studies: Lab studies usually expose animals to something like RF energy to see if it causes tumors or other health problems.

Researchers might also expose normal cells in a lab dish to RF energy to see if it causes the types of changes that are seen in cancer cells, phone cancer prevention. Studies in people: Another type of study looks at cancer rates in different groups of people. Such phone cancer prevention study might compare the cancer rate in a group exposed to something like cell phone use to the rate in a group not exposed to it, phone cancer prevention, or compare it to what the expected cancer rate would be in the general population.

But sometimes it can be hard to know what the results of these studies mean, because many other factors phone cancer prevention might affect the results are hard to account for.

In most cases neither type of study provides enough evidence on its own phone cancer prevention show if something causes cancer in people, so researchers usually look at both lab-based and human studies.

Some scientists have reported that the RF waves from cell phones produce effects in human cells in lab dishes that might possibly help tumors grow. However, several studies in rats and mice have looked at whether RF energy might promote the development of tumors caused by other known carcinogens cancer-causing agents.

These studies did not find evidence of tumor promotion. A recent large study by the US National Toxicology Program NTP exposed large phone cancer prevention of lab rats and mice to RF energy over their entire bodies for about 9 hours a day, starting before birth and continuing for up to 2 years which is the equivalent of about 70 years for humans, according to NTP scientists.

Phone cancer prevention study found an increased risk of tumors called malignant schwannomas of phone cancer prevention heart in male rats exposed to RF radiation, as well as possible increased risks phone cancer prevention certain types of tumors in the brain and adrenal glands.

But some aspects of this study make it hard to know just how well these results might be applied to cell phone use in people. For example, phone cancer prevention, there was no clear increased risk among female rats or among male or female mice in the phone cancer prevention. The doses of RF radiation in the study were also generally higher than those used in cell phones ranging from 1.

The male rats in the study exposed to RF waves also lived longer, phone cancer prevention, phone cancer prevention average, than the rats who were not exposed, for unclear reasons. Because of this, the NTP has noted that the study results cannot be directly applied to humans.

Still, the results add to the evidence that phone cancer prevention phone signals might potentially impact human health. The study found that when people had an active cell phone held up to their ear for 50 minutes, brain tissues on the same side of the head as the phone used more glucose than did tissues on the other side of the brain. Glucose use goes up in certain parts of the brain when it is in use, such as when we are thinking, speaking, or moving.

The possible health effect, if any, from the increase in glucose use from cell phone energy is unknown, phone cancer prevention. Several dozen studies have looked at possible links between cell phone use and tumors.

Phone cancer prevention of these studies have focused on brain tumors. Many of these have been case-control studies, in which patients with brain tumors cases were compared to people free of brain tumors controlsphone cancer prevention, in terms of their past cell phone use. Overall, the study found no link between brain tumor risk and the frequency of calls, longer phone cancer prevention time, phone cancer prevention, or cell phone use for 10 or more years.

But this finding was hard to interpret because some people in the study reported implausibly high cell phone use, as well as other issues, phone cancer prevention.

The researchers noted that the shortcomings of the study prevented them from drawing any firm conclusions, and that more research was needed. As with gliomas and meningiomas, there was no overall link between cell phone use and acoustic neuromas. A large, long-term study has been comparing all of the people in Denmark who had a cell phone subscription between and aboutpeople to those without a subscription to look for a possible increase in brain tumors.

The most recent update of the study followed people through Cell phone use, even for more than 13 years, was not linked with an increased risk of brain tumors, salivary gland tumors, or cancer overall, nor was there a link with any brain tumor subtypes or with tumors in any location within the brain.

But this study also has some drawbacks. First, it is based only on whether or not people had a cell phone subscription at the time, phone cancer prevention. There are also limits as to how well this study might apply to people using cell phones today. For example, while the cell phones used at the time of the study tended to require more power than modern cell phones, people also probably used the phones quite a bit less than people use phone cancer prevention phones today.

A large prospective forward-looking study of nearlywomen in the UK examined the risk of developing brain tumors over a 7-year period in phone cancer prevention to self-reported cell phone use at the start of the study. This study found no link between cell phone use and brain tumors overall or several common brain tumor subtypes, but it did find a possible link between long-term cell phone use and acoustic neuromas.

In summary, most studies of people published so far have not found a link between cell phone use and the development of tumors. However, these studies have had some important limitations that make them unlikely to end the controversy about whether cell phone use affects cancer risk.

First, studies have not yet been able to follow people for very long periods of time, phone cancer prevention. When tumors form after a known cancer-causing exposure, it often takes decades for them to develop.

Because cell phones have been in widespread use for only about 20 years in most countries, it is not possible to rule out future health effects that have not yet appeared. Second, cell phone usage is constantly changing. People are using their cell phones much more than they were even 10 years ago, and the phones themselves are very different from what was used in the past. This makes it hard to know if the results of studies looking at cell phone use in years past would still apply today.

Third, most of the studies published so far have focused on adults, rather than children. Phone cancer prevention case-control study looking at children and teens did not find a significant link to brain tumors, but the small size of the study limited its power to detect modest risks.

Cell phone use is now widespread even among younger children. It is possible that if there are health effects, they might be more pronounced in children because their bodies might be more sensitive to RF energy. Finally, the measurement of cell phone use in most studies has been crude. In these types of studies, it can be hard to interpret any possible link between cancer and an exposure. People with cancer are often looking for a possible reason for it, so they may sometimes even subconsciously recall their phone usage differently than people without cancer.

With these limitations in mind, it is important that the possible risk of cell phone exposure continue to be researched using strong study methods, especially with regard to use by children and longer-term use.

Several national and international agencies study different exposures and substances in the environment to determine if they can cause cancer.

Something that causes cancer or helps cancer grow is called a carcinogen, phone cancer prevention. The American Cancer Society looks to these organizations to evaluate the risks based on evidence from laboratory and human research studies. Based on the available evidence, some of these expert agencies have evaluated the cancer-causing potential of cell phones and RF waves.

In general, they agree that the evidence of a possible link is limited, and more research is phone cancer prevention to look at possible long-term effects. Its major goal is to identify causes of cancer. However, phone cancer prevention, several other agencies have commented on the possible risks.

According to the Food and Drug Administration FDAwhich regulates the safety of radiation-emitting devices such phone cancer prevention cell phones in the United States:, phone cancer prevention. We believe the existing safety limits for cell phones remain acceptable for protecting the public health.

However, organizations in the United States and overseas are sponsoring research and investigating claims of possible health effects related to the use of wireless telephones. Scientific studies are underway to determine whether cell phone use may cause health effects. More research is needed because cell phone technology and how people use cell phones have been changing rapidly, phone cancer prevention.

A few other health concerns have been raised about cell phone use. One has been whether the RF waves from cell phones might interfere with medical devices such as heart pacemakers.

According to the FDA, cell phones should not pose a major risk for the vast majority of pacemaker wearers. Several studies have found that people who use cell phones while driving are more likely to be in car accidents. It is not clear if hands-free phones are safer than hand-held phones when it comes to driving. It is not clear at this time that RF waves from cell phones cause harmful health effects in people, but studies now being done should give a clearer picture of the possible health effects in the future.

Until then, there are several things that people who are concerned about RF waves can do to limit their exposure. Use the speaker mode on the phone or a hands-free device such as a corded or cordless earpiece.

This moves the antenna away from your head, phone cancer prevention, which decreases the amount of RF waves that reach the head.

Corded earpieces emit virtually no RF waves although the phone itself still emits small amounts of RF waves that can reach parts of the body if close enough, such as on the waist or in a pocket.

Texting instead of talking on the phone may be another phone cancer prevention to reduce your exposure. But it may not be a good option in some situations, especially if you are driving. For safety reasons, it is especially important to limit or avoid the use of cell phones while driving.

This is one of the most obvious ways to limit your exposure to RF waves from cell phones. You may want to use your cell phone only for shorter conversations, phone cancer prevention, or use it only when a conventional phone is not available, phone cancer prevention.

Some people might consider choosing a phone with a low SAR value.


Cellphones and cancer: What's the risk? - Mayo Clinic


phone cancer prevention


Texting instead of talking on the phone may be another option to reduce your exposure. But it may not be a good option in some situations, especially if you are driving. For safety reasons, it is especially important to limit or avoid the use of cell phones while driving. Limit your (and your children’s) cell phone Last Revised: November 5, Lyda Hill Cancer Prevention Center. MD Anderson 's Lyda Hill Cancer Prevention Center offers a range of services to help you learn how to reduce your cancer risk or to detect cancer early - when it’s most treatable. Cancer screening exams are based on age, gender and disease risk. We also offer risk assessment, risk reduction and diagnostic evaluation services. Division of Cancer Prevention National Cancer Institute Medical Center Drive Rockville, MD For technical or navigational difficulties, contact your internet provider and/or technical support staff. If you are still experiencing difficulty with our Web site, send a message to our.