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

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.

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.

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.

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."

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