A member asked:

My father is 55 years old. he regularly used to have common cold.what might be the reason?

A doctor has provided 1 answer

Frequent viruses: Does your father smoke? Or is he around others who do? Smoking/second-hand smoke create cellular damage (inflammation) that the body has to constantly work to repair, which makes the body more susceptible to infection. The immune system takes longer to control viruses and all infections in smokers. Lack of sleep and regular alcohol use can also lower the immune system. Or, maybe it is allergies?

Answered 11/27/2017

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