The Misleading Booger Myth That's Been Debunked By Science

There are numerous important markers of health to pay attention to on a regular basis, and some of these might actually be in your nose. Mucus not only helps to keep your nasal passages from drying out, but it also helps to trap germs that might otherwise lead to illness. When mucus dries, it turns into what is commonly known as "boogers" (and science can also explain why some kids like to eat these entities). Normally, mucus is clear and has a thin, yet gel-like consistency. Nasal discharge that has a different consistency and/or color can certainly be suspicious. Green mucus may in fact be associated with an infection or inflammation of the sinuses (sinusitis), but it's also a myth that having this color of nasal discharge automatically means you have an infection.

Seeing mucus of any color can understandably cause some concern, and you might also want to get rid of excess mucus when you're congested. Green is often considered one of the more alarming colors, as this is far from being close to a normal clear color at all. Having thick, yellow to green mucus is often associated with an either infection or sinusitis. But as both the Mayo Clinic and Harvard Health note, green or greenish-gray colored mucus is not a reliable way to determine if you're sick on its own. It is a fact that some viral or bacterial infections may cause green nasal discharge, but the same is also true of non-infectious sinusitis, a common cold virus, and even severe seasonal allergies.

The green color you might see in nasal discharge is attributed to iron-containing enzymes in white blood cells, which activate in response to germs, particles, or irritants. Also, the longer these enzymes sit in your nasal passages, the brighter the green your mucus might appear. This is why you might see greener-looking boogers when you wake up in the morning, for example. Green-colored mucus from a common cold also tends to resolve on its own within a few days.

While green mucus can indeed be harmless, there are some signs of something potentially more sinister at hand. Green-colored mucus that persists or worsens over the course of several days is one red flag, particularly if it doesn't improve with over-the-counter medications. Green mucus that occurs along with a high fever, sinus pain, congestion, headache, and/or bad breath, are other possible signs and symptoms of a potential sinus infection.

Overall, it's important to see a healthcare professional if you do experience thicker-than-normal mucus with any unusual color (including green). They can help determine the underlying cause of green nasal discharge and prescribe treatment as necessary. Since antibiotic resistance is a real concern, such medications should be reserved for confirmed bacterial infections. Never ignore the signs of a possible infection, and never self-diagnose different colored boogers on your own. While it is a myth green mucus doesn't always mean an infection is present, it's best to have a doctor rule out this possibility.