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.

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

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."

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

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.

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

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.