Devra Davis quotes:

The question is, do you want to play Russian roulette with your brain?

You can do something really radical, which is turn your phone off and reclaim your private life.

Get in the habit of never putting the phone next to your brain or body unless it's a true emergency.

Cellphone and other wireless radiation should be classified as a "probable human carcinogen."

Say no to being on-call 24/7 unless you are an emergency responder. Use a speakerphone, use a headset.

Brain cancer has a latency in the population of 40 years.

In particular, recently Belgium has banned the sale of a cellphone to a 7-year-old. Turkey has banned ads and advertising to children. So has France for children under 12. India has bans in certain areas. In Bangalore, you cannot sell a cellphone to someone younger than 16. So in different parts of the world, they've taken different steps.

Cancer can take a long time to develop and necessarily has multiple causes.

Radar, of course, is what cellphone radiation is exactly like. It can be a similar frequency, it's just much weaker power.

The average studies of cellphones and brain cancer have studied people who have used cellphones for five years or less. Sometimes eight years. Every study that has actually examined people who have used phones for 10 years or more, and is well designed, finds a 50 percent to an 800 percent increased risk. So that is why the Israelis, the Finnish, the French governments have all issued warnings.

We know that drugs, sex and rock and roll stimulates something called dopamine in the brain. So do videogames. Dopamine is something that we crave.

When the signal is weak, the phone is working more, you drain the battery faster, so only use a phone when the signal is weak in a true emergency.

Where people are using phones in rural areas their risk of brain cancer is higher than in urban areas.

It's true that non-ionizing radiation lacks the power to have damage. But its damage seems to come from its modulated signal. So every 900 milliseconds, if you have a cellphone in your pocket, it's getting half of that radiation which is getting into you as it seeks the signal from the tower.

If you are a physician and someone comes to see you with an absolutely incapacitating headache or a swollen arm, you don't tell them, "Come back in 10 years when I've completed my study and I'll see what I can do for you."

I don't know that cell phones are dangerous. But I don't know that they are safe.

There is apparently an epidemic of tinnitus in younger people. Tinnitus is ringing in the ears and it can be disabling. Tinnitus is associated with cellphone use.

There's an increase in serious weight disorders from cellphone use. And people who don't sleep have serious other consequences for their health that can be associated with it. There may be as well increases in problems with their memory. And all of those things are not as sexy and don't demand as much attention as cancer, but they can be very, very important from a public health point of view.

The reality is, the way we've used phones and the amount that we've used phones has changed radically in the past five years. When phones were first marketed in the 1990s, it cost, for car phones, $3000 to buy a phone and the average person did not use it that much. They were very, very expensive.

The whole idea of what is evidence for causation in epidemiology cannot be separated from tTindustry understood that if they could raise doubt about how you could conclude something caused cancer, that they put so much effort into getting so many receptive public health authorities to say, "Well, causation requires that these five things be met." So that is, in fact, nonsense.

A young child's brain has a thinner skull and the brain contains more fluid. The more fluid or fat in any material, the more it absorbs microwave radiation.

The reality is, cellphones have to be used safely. They are today like cars and trucks - we can't live without them, but we certainly wouldn't give a car or truck to a toddler to drive. Why are we thinking it's perfectly okay to give a device that the World Health Organization has said is a "possible human carcinogen" to infants and toddlers, and for that matter, schoolchildren?

Just a little bit of exposure to this pulsed digital signal, which is now a cellphone signal, could weaken membranes of the brain.

The younger a cell, the faster it grows, the more vulnerable it is to damage.

We get dopamine in the brain when we like something a lot. Well, cellphones stimulate dopamine, too. So it really is the case that there are some people who are pretty addicted to these devices.