1. Background: Relationship between peanut consumption and cardiovascular disease.

2. Objective: Evaluate the association between frequency of peanut consumption and occurrence of cardiovascular disease.

3. Methods: Survey and follow-up of over 74,000 Japanese adults aged 45-74.

4. Results: Eating 4 peanuts a day can reduce the risk of cardiovascular disease.

5. Result details: Eating 4 peanuts can decrease the risk of ischemic stroke by 20%, total stroke by 16%, and cardiovascular disease by 13%.

6. Conclusion and implication: Peanut intake can serve as a simple and effective method for preventing cardiovascular disease.

7. Study limitations: The study was conducted only on the Japanese population, and further validation of the results is required.

8. Practical application: Peanuts can be a convenient and affordable dietary supplement for the prevention of cardiovascular disease.