Statins in Healthy Adults: A Meta-Analysis

Area of Science:

• Cardiology
• Pharmacology
• Public Health

Background:

• Cardiovascular disease (CVD) remains a leading cause of mortality globally.
• Statin therapy is widely used for CVD prevention, but its efficacy in primary prevention populations without underlying health conditions requires further investigation.
• Systematic reviews and meta-analyses are crucial for synthesizing evidence on drug efficacy.

Purpose of the Study:

• To evaluate the efficacy of statin therapy in reducing cardiovascular disease (CVD) events in adults without pre-existing health conditions.
• To conduct a meta-analysis and systematic review of primary prevention randomized controlled trials (RCTs).
• To identify correlations between number-needed-to-treat (NNT) and LDL-C reduction in relation to CVD outcomes.

Main Methods:

• Systematic search for primary prevention RCTs comparing statins with control groups.
• Classification of identified RCTs based on relevance for meta-analysis feasibility.
• Evaluation of CVD events and mortality as primary endpoints.

Main Results:

• A statistically significant 12% relative risk reduction in all combined CVD events was observed in studies including participants without underlying health conditions.
• Strong negative correlations were found between number-needed-to-treat (NNT) and LDL-C reduction for both Coronary Heart Disease (CHD) and all CVD outcomes.
• No significant differences were observed between study categories, except for the overall CVD event reduction.

Conclusions:

• The study indicates a potential benefit of statin therapy for primary CVD prevention in individuals without underlying health conditions.
• There is a critical need for dedicated research focusing on the effects of statins in populations without diagnosed health issues.
• Current evidence synthesis highlights gaps in understanding statin efficacy for primary prevention.