What is the average number of colds an adult experiences per year?

The average number of colds an adult experiences per year is generally recognized to be between 2 to 4. This figure is consistent with research and surveys that indicate adults typically catch this many colds, mainly due to exposure to viruses and the natural fluctuations in immune response as we age and encounter different pathogens.

While some adults may experience fewer colds, particularly if they maintain a healthy lifestyle, others may experience more based on factors such as environment, occupational exposure, and personal health conditions that can influence immune function.

The ranges provided in the options reflect a spectrum of experiences, but the 2 to 4 range captures the majority of the adult population's experience with upper respiratory infections, particularly rhinoviruses, which are the common cause of colds. Therefore, this range accurately reflects the most common occurrence rate among adults.