Clear Mucus Is Usually Good News
Your nose is running, tissues are piling up, and you’re starting to spiral. Clear snot is almost always the least alarming thing in the world. It means your body is reacting to something benign: pollen, dust, dry air, a chilly morning. Your nose is just doing its job.
Clear mucus is your body’s default state. The membranes lining your nasal passages produce it constantly, sweeping out particles and keeping everything moist. When you see it, there’s no infection driving the show. An over-the-counter decongestant or antihistamine can quiet things down if the dripping gets old.
Yellow and Green Mean Your Immune System Showed Up
Yellow snot looks alarming. It isn’t. When your immune system detects a virus or bacteria, it deploys white blood cells to handle the situation. Those cells leave pigment behind as they die off, and that pigment turns your mucus yellow. It’s not a sign things are going wrong — it’s proof your body is paying attention.
Green mucus follows the same logic, just further along. The concentration of dead white blood cells is higher, the color is deeper. Most infections clear up on their own within one to two weeks. If green mucus persists past 10 to 12 days, or you’re running a high fever alongside it, that’s worth a call to your doctor.
