The risk relationship described between age and heart attack during firefighting work is best described as:

• A. Decreases with age
• B. Age is Irrelevant
• C. Increases with age
• D. Peaks at middle age but then declines

Answer: (C)

Age increases cardiovascular risk during firefighting because the body’s ability to handle sudden, high-intensity work declines as people get older. With age, the likelihood of underlying heart disease rises, arteries tend to be less flexible, and there’s often a smaller reserve in how much stress the heart can tolerate. Firefighting adds peak demand, heat, heavy gear, dehydration, and rapid shifts in workload, all of which raise myocardial oxygen demand. In older individuals, these factors are more likely to trigger a heart attack than in younger, healthier muscles and vessels, making the relationship best described as increasing with age. The other patterns don’t fit the real-world risk trajectory in this context.