Mobile Threat?

A study finds that cell-phone emissions can change brain activity

By Alice Park Monday, Mar. 07, 2011
    • Ewen Spencer / Gallery Stock

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    Some triggers of heart attacks are well known: physical strain, caffeine, angry outbursts. But others, like air pollution, may come as a surprise. A European study reports that polluted air containing 30 micrograms of particulates per cubic meter from car exhaust and manufacturing emissions is responsible for about the same number of heart attacks as coffee consumption, and nearly as many as physical exertion. Particulates can cause arteries to harden, making them more vulnerable to heart-seizing blockages.

    Bone-building drugs prevent fractures near the hip but may cause breaks lower in the leg

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