Unlike previous studies of nut consumption as a whole, scientists have investigated the association between specific types of nuts and major cardiovascular events.
210 thousand people, up to 32 years of research
Specifically, the study surveyed more than 210 thousand people, including women from Nurses'Health Study and Nurses' Health Study II, as well as men from Health Professionals Follow-up Study project, who were followed up for 32 years. A questionnaire survey was conducted every two years to collect information about the patient's medical history, lifestyle and health status.
A total of 14136 cardiovascular disease cases, including 8390 cases of coronary heart disease and 5910 cases of stroke, were recorded.
Nut intake negatively correlated with cardiovascular disease
The results showed that there was a consistent negative correlation between total nut intake and total cardiovascular disease and coronary heart disease. After investigating individually the consumption of individual nuts, it was found that walnuts were associated with a 19% reduction in cardiovascular risk and a 21% reduction in risk of coronary heart disease (one or more times per week). In addition, compared with those who never ate nuts, participants who ate two or more times per week two times a week or peanut (tree nuts) had a 13% and 15% lower risk of cardiovascular disease, with a 15% and 23% reduction in the risk of coronary heart disease, respectively.
On the other hand, participants who ate 5 or more nuts (five or more servings of nuts; 1 copies of 28 g) per week had a 14% lower risk of cardiovascular disease and a 20% lower risk of coronary heart disease compared with those who had never or nearly never eaten nuts. When individual tree nuts, peanuts and walnuts were consumed alone, the results were similar.
In addition, there was no evidence that total nut consumption was associated with stroke risk, but eating peanuts and walnuts was negatively associated with stroke risk, while nut eating had nothing to do with the risk of stroke. ]