Mucus is usually clear when you're not sick. So it can be startling when your boogers are suddenly as yellow as the sun.

As gross as it sounds, your mucus—be it clear, green, yellow, or brown—is a reflection of your overall health. Below, doctors explain how—and break down what each snot color means. Why snot ...

Snot plays a powerful role in protecting us from disease – and its colour alone can provide insights into what's going on in ...

Yellow mucus means your body's immune system has been activated, which can change the color or consistency of your mucus, according to the Cleveland Clinic. Initially, ...

Yellow snot means you are probably fighting an infection. When you have an infection, your immune system's white blood cells rush to the site to fight and destroy the microbial invader, ...

The color of your phlegm may be more than simply an unpleasant observation; it may also be an indicator into your health. The color of your mucus might point to underlying issues that may require ...

Yellow mucus means your body's immune system has been activated, which can change the color or consistency of your mucus, according to the Cleveland Clinic. Initially, ...

Phlegm is naturally clear. So, if your phlegm is a different color, such as yellow or green, you may have a viral or bacterial infection. Brown, red, or black phlegm may be a sign of a more ...

Like with green snot, yellow snot is the collection of defensive white blood cell secretions. Generally, the greener the color, the more cells required for defense. The yellower, the fewer.

Boogers are dried nasal mucus (snot) that protect you against infections and allergens. Colors, like green or yellow boogers, can tell you about your health.

Yellow snot is gross, but does it mean you have an infection? Here's everything you need to know about it. Snot, mucus, phlegm ... whatever you call it, it's kind of a mess.