Despite national guidelines indicating that statins can lower the risk of heart attack and stroke, many patients who could benefit do not take them because of fear of side effects.
The new research published in the Journal of the American Heart Association also found that half of the eligible patients had not been offered a statin.
Statins lower the amount of low-density lipoprotein and have been shown to lower the risk of heart attack and strokes. Because statins are proven effective and have a low risk of side effects, guidelines from the American Heart Association/American College of Cardiology recommend doctors use an atherosclerotic and cardiovascular disease risk calculator to give a detailed assessment of a person's 10-year risk for heart disease and to help create a personalised plan.
"We need to focus our efforts on improving how doctors identify patients who need to be on a statin, and how they present information to patients to ensure that no one is missing the opportunity to improve their heart health," said Corey Bradley, lead author of the study and a researcher at the Duke Clinical Research Institute in Durham, North Carolina.
To find out whether eligible patients use statins, and why they sometimes decline or discontinue the drugs, researchers surveyed 5,693 adults (average age 68) who participated in a registry for those receiving medical care at cardiology, primary care, or endocrinology practice.
- Of the 1,511 (26.5%) who were not currently taking statins, 59.2% reported that they had never been offered them
- Patients were more likely to report never being offered a statin if they were female (22% higher than others), black (48% higher than others)
- Patients seen in cardiology practices were more likely to be offered a statin than those in primary care.
"It is possible that some people did not remember being offered a statin, so we may have over-estimated the per cent who were never offered one. However, we believe that if the patient did not remember the conversation, the discussion likely was not an effective one," Bradley said.
Of the patients who declined (10.1%) or discontinued (30.7%) statins, the most common reasons given were fear of side effects and perceived side effects. Compared with statin users, non-users were less likely to believe statins are safe.
"Although there are risks associated with statins, the public fear of side effects is out of proportion to the actual risks," said Ann Marie Navar, senior author of the study and assistant professor of Medicine at the Duke Clinical Research Institute. "Misconceptions about statins are everywhere and are fueled by false information on the internet. We need better tools to help combat this type of misinformation."
Despite their concerns, in the survey, 59.7% of patients who discontinued a statin would consider retrying it.
"Physicians should not hesitate to re-approach the conversation about starting or re-trying statin therapy in patients who could benefit but are currently not on the therapy," Bradley said.