Health and cell phones

1. Health and cell phones Menglin Zhang Minghao Zhang

2. Outline • Introduction • Use cell phones while driving is dangerous • Do use cell phones cause brain cancer? • Conclusion

3. Introduction • In 2011, the number of cell phone users is estimated to be approximately 5 billion all over the world • Advantages • disadvantages

4. Using cell phones while driving • It is a dangerous action • By law • Distraction • extend reaction time

6. Hand free and hand-held • In Saskatchewan, hand free cell is not prohibited • Actually, there is no different • Reasons

7. Cell phone driver and drunk driver • Cell phone driver is even more dangerous than drunk driver • Study

8. Engineering solution • Mini interference-producing unit • Just interference the drivers’ cell phone

9. Cell phone and brain cancer Cell phones are dangerous Cell phones are safe Cell phones use low frequency Emitted by a non-ionizing Billions of people are using cell phones, but there is no clear brain cancer rate increased • They emit microwaves • They produce heat

10. How do cell phones work

11. Compare with other radiations

12. Latest study • In Denmark, the biggest study to look for the link between cell phone and brain cancer was held • 358,000 people • 13 years • Result is no link between cell phone and brain cancer

13. How to reduce the risk • Use earpiece or speakerphone • Text message instead • Limit time on using cell phone, especially for kids

14. Conclusion • Do not use cell phones while driving • “The effect is small, but it is still unnatural. Nature did not prepare our brains for this”

15. Thank you for listening Any questions?