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Health

Healthy People Spend Up to 25 Days a Year Sick With Respiratory Infections

These infections cost the world about $600 billion in lost productivity every year.

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You spend 15 to 25 days every year sick with a respiratory infection, even if you are otherwise healthy. Over a lifetime, that adds up to about 5% of your life spent fighting off colds and flu.

We tend to power through it as an annoyance, but the cost adds up fast. Lost work time from these infections eats 1 to 1.5% of global productivity every year, about $600 billion.

The health effects linger, too: a child who catches a cold between birth and age 3 faces about 10 times the chance of having asthma by age 6. An adult with flu faces about six times the risk of a heart attack in the next seven days.

Questions people ask

Why do we catch colds so often?

More than 200 viruses can cause the common cold, with rhinoviruses the most common. Immunity to one does not protect against the others, and immunity fades over time. Crowded indoor life, especially in winter, gives those viruses plenty of chances to spread.

How can the flu trigger a heart attack?

Flu causes widespread inflammation and stresses the heart and blood vessels. That inflammation can destabilize fatty plaques in arteries, and raise the risk of clots. Doctors see the same short-term jump in risk after other severe respiratory infections.

Can anything actually cut down those sick days?

Ventilation, filtration, and avoiding crowded indoor air during peak season all lower exposure. Hand washing helps because cold viruses linger on surfaces and hands. Vaccines do not prevent all colds, but flu and COVID shots reduce the most severe respiratory illnesses.