Wellness Health & Well-being Ask TreeHugger: Can I Stand in Front of the Microwave? By Helen Suh MacIntosh Writer Harvard University Massachusetts Institute of Technology Dr. Helen Suh, a professor at Tufts University, is an internationally recognized expert in environmental epidemiology. our editorial process Helen Suh MacIntosh Updated January 10, 2021 Ketut Subiyanto / Pexels Share Twitter Pinterest Email Wellness Health & Well-being Clean Beauty Question: Is it really dangerous to stand in front of the microwave while it's cooking something? Response: Microwave ovens cook food using microwave radiation (at a frequency up to 2450 mHz). Microwave radiation differs from radiation produced from the sun or X-rays, in that it is non-ionizing and thus non-cancer causing. Nevertheless, the use of microwave radiation to cook food has raised some concerns about microwave ovens, generally because of possible radiation leaks, nutrient loss, and the possibility of cancer causing food byproducts. Standing in front of your microwave may increase your exposures to microwave radiation; however, such increases are likely to be low, especially when compared to your exposures to microwave radiation from your cell phone. Exposures to microwave radiation are kept low by the oven design, which makes sure that microwaves stay inside the oven and are only produced when the oven is on and the door is shut. Radiation leaks around and through the glass door are generally below levels recommended by international standards. In the United States, microwave ovens are regulated by the U.S. Food & Drug Administration, who set safety requirements for new microwave ovens of 1 mW/cm2, measured 5 cm away from the oven surface. [This requirement sets the rate of energy flow per unit energy.] The maximum permissible radiation level is higher for older microwave ovens, with an allowable level of 5 mW/cm2, measured 5 cm away from the oven surface. Both levels are thought to be safe and to pose no risk to your health. You should be aware, however, that your oven could leak more microwave radiation, if it gets damaged, is dirty, or is improperly operated or maintained. You can minimize these chances by making sure that your oven door closes properly and that your door’s safety devices (that prevent microwaves from being produced when the door is open) work correctly. Also, you should make sure that the seals to your door and oven are clean and intact. If your oven is damaged in any way, you should not use it until it has been repaired by an appropriately qualified service engineer. If you are still worried or want to be cautious, you can also just watch your food cook from further away. This will reduce your exposures to radiation from your microwave substantially. Happy cooking! View Article Sources Zhi, Wei-Jia, et al. “Recent Advances in the Effects of Microwave Radiation on Brains.” Military Medical Research, vol. 4, no. 1, 21 2017, p. 29., doi:10.1186/s40779-017-0139-0 "Microwave Ovens." U.S. Food & Drug Administration (FDA).