What CO level is dangerous to your health?

The health effects of CO depend on the level of CO and length of exposure, as well as each individual's health condition. The concentration of CO is measured in parts per million (ppm).

Health effects from exposure to CO levels of approximately 1 to 70 ppm are uncertain, but most people will not experience any symptoms. Some heart patients might experience an increase in chest pain. As CO levels increase and remain above 70 ppm, symptoms may become more noticeable (headache, fatigue, nausea). As CO levels increase above 150 to 200 ppm, disorientation, unconsciousness, and death are possible.

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1. What is carbon monoxide (CO), and how is it produced in the home?
2. How many people are unintentionally poisoned by CO?
3. What are the symptoms of CO poisoning?
4. What should you do to prevent CO poisoning?
5. What CO level is dangerous to your health?
6. What should you do if you are experiencing symptoms of CO poisoning?
7. What has changed in CO detectors/alarms recently?
8. How should I install a CO Alarm?
9. What should you do when the CO detector/alarm sounds?
10. How should a consumer test a CO detector/alarm to make sure it is working?
11. What is the role of the U.S. Consumer Product Safety Commission (CPSC) in preventing CO poisoning?
12. Do some cities require that CO detectors/alarms be installed?
13. Should CO detectors/alarms be used in motor homes and other recreational vehicles?