- A weakened immune system: People with weakened immune systems, such as those with HIV or cancer, are more likely to experience longer-lasting colds.
- Certain medical conditions: Some medical conditions, such as asthma and chronic bronchitis, can make it harder for the body to fight off a cold.
- Exposure to multiple viruses: It is possible to catch multiple colds at the same time, which can lead to a longer duration of symptoms.
- Not getting enough rest: When the body is under stress, it is more difficult for it to fight off infection.
- Smoking: Smoking can damage the respiratory system and make it more difficult to clear mucus from the lungs.
If your cold lasts for more than 2 weeks, it is important to see a doctor to rule out other potential causes.