Final answer:
The statement that doctors are reluctant to recommend aspirin to older patients until further research is true, due to the potential serious side effects, such as ulcers and gastrointestinal bleeding.
Step-by-step explanation:
The article suggests that doctors are reluctant to recommend aspirin to their older patients until further studies are completed. This statement is true. While aspirin has been known to decrease the risk of myocardial infarction in those without a history of heart disease, it also presents serious side effects, including the risk of ulcers, gastrointestinal bleeding, Reye's syndrome, and allergic reactions. Given these potential side effects, physicians may tread cautiously and wait for further research before widely recommending aspirin to an elderly population, especially since older individuals can be more susceptible to adverse reactions.