Final answer:
Adverse drug effects are more common in the elderly due to physiological changes and age-related declines in liver and kidney function.
Step-by-step explanation:
In general, adverse drug effects can happen in any age group, but they are more common in certain populations. According to studies, the elderly are more prone to experiencing adverse drug effects due to factors such as physiological changes, multiple medications, and age-related declines in liver and kidney function. Age-related changes in the body's ability to metabolize drugs can lead to a higher risk of drug interactions and adverse effects.