human
I'm worried about the health risks of using a cell phone. Is this a valid concern?
assistant
It's hard to say for sure without more information, but it is certainly possible that long-term exposure to electromagnetic fields from cell phones could be harmful. However, there are many other sources of electromagnetic radiation in our environment, and studies have not found any evidence that cell phone use causes cancer or other illnesses. If you're concerned about your own health, I suggest limiting your time spent on cell phones as much as possible, avoiding close contact with them when they are transmitting, and wearing an EMF protection device if available.