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  1. www.webmd.com › covid › covid-19-symptomsCoronavirus Symptoms: Early Signs, Serious Symptoms - WebMD

    2023年11月10日 · Stay informed about COVID-19 symptoms & prevention. Explore WebMD's comprehensive resource for information on signs, precautions, & the latest updates

  2. www.webmd.com › eye-health › blue-light-healthHow Does Blue Light Affect You? - WebMD

    2022年9月16日 · Symptoms include dry, irritated eyes and blurred vision. Blue light may also damage your retinas. That’s called phototoxicity. The amount of damage depends on wavelength and exposure time ...

  3. www.webmd.com › diet › foods-high-in-lectins6 Foods High in Lectins and Why to Avoid Them - WebMD

    2022年11月10日 · Lectins are a type of protein found in all plants and animals. Different lectins can have different effects on your health. Learn which 8 foods to eat to avoid dangerous lectins.