Newspaper article Evening Chronicle (Newcastle, England)

Top Class: PROFESSOR SCIENCE

Newspaper article Evening Chronicle (Newcastle, England)

Top Class: PROFESSOR SCIENCE

Article excerpt

DEAR Professor Science, why does cold weather make my nose run?

At this time of year quite a lot of us are suffering from drippy noses. Snot, or mucus, does an important job - it filters the air we breathe in. Dirt or micro-organisms, such as bacteria or viruses, are trapped by the sticky mucus. They are then expelled from the body when we sneeze, blow or pick our noses! If we didn't have mucus to help us get rid of these nasal intruders they could make us ill.

When they cause a cold or the flu, our bodies produce even more mucus to try and get rid of the virus. Our bodies' white blood cells, which fight the infection, produce chemicals that give the mucus its green colour.

People who have allergies to dust and pollen often experience a runny nose, this is because their bodies respond as though they were under attack from bacteria. …

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