By Olga Kharif

Mobile Phones as Health-Care Tools

While San Francisco and other cities fret over radiation levels in handsets, AT&T (T), Qualcomm (QCOM), and a host of startups are striving to turn mobile phones into tools that may help people get healthy. New accessories and software can help wireless devices monitor heart rates, remind people when to take pills, and help patients stay in closer contact with doctors and caregivers.

The U.S. market for health-related mobile—or m-health—products for consumers may double to $600 million this year, according to Parks Associates, a consulting firm in Dallas. The market may double again to $1.3 billion in 2011, Parks Associates says.

This Businessweek.com slide show highlights some of the m-health products coming down the pike and which companies are angling for a slice of the growing m-health market.