Other major health organizations aren't so cautious. The American Cancer Society says that there's no good evidence that cell phones cause cancer. The National Cancer Institute agrees, as do the National Institute of Environmental Health Sciences, the Food and Drug Administration, the Federal Communications Commission, and the Centers for Disease Control and Prevention. These are the agencies tasked with considering whether potential risks cause actual threats. IARC is kind of like the first line of defense, whose job is to consider even the faintest evidence, so that other organizations can go back and investigate. But when virtually every federal agency looks at the evidence and decides that there's not enough data to support the idea that cellphones cause cancer, we should listen to them over IARC. IARC isn't making judgments based on what's actually posing a threat to your health. The NCI and the NIH are, and they've spoken loud and clear: cellphones don't give you cancer.