Paris, France - 31 Aug 2019: Eating nuts at least twice a week is associated with a 17% lower risk of death from cardiovascular disease, according to research presented today at ESC Congress 2019 together with the World Congress of Cardiology. (1)
"Nuts are a good source of unsaturated fat and contain little saturated fat," said study author Dr Noushin Mohammadifard of Isfahan Cardiovascular Research Institute, Iran. "They also have protein, minerals, vitamins, fibre, phytosterols, and polyphenols which benefit heart health. European and US studies have related nuts with cardiovascular protection but there is limited evidence from the Eastern Mediterranean Region."
This study examined the association between nut consumption and the risk of cardiovascular disease and death in the Iranian population. A total of 5,432 adults aged 35 and older with no history of cardiovascular disease were randomly selected from urban and rural areas of the Isfahan, Arak and Najafabad counties. Intake of nuts including walnuts, almonds, pistachios, hazelnuts, and seeds was assessed in 2001 with a validated food frequency questionnaire.
Participants or family members were interviewed every two years until 2013 for the occurrence of cardiovascular events and death. The specific outcomes investigated were coronary heart disease, stroke, total cardiovascular disease, death from any cause, and death from cardiovascular disease.
During a median 12-year follow-up, there were 751 cardiovascular events (594 coronary heart disease and 157 stroke), 179 cardiovascular deaths, and 458 all-cause deaths.
Eating nuts two or more times per week was associated with a 17% lower risk of cardiovascular mortality compared to consuming nuts once every two weeks. The connection was robust even after adjusting for factors that could influence the relationship such as age, sex, education, smoking, and physical activity. Nut intake was inversely associated with the other outcomes but lost significance after adjustment.
ESC guidelines list 30 grams of unsalted nuts per day as one of the characteristics of a healthy diet, while noting that the energy density of nuts is high.(2)
"Raw fresh nuts are the healthiest," added Dr Mohammadifard. "Nuts should be fresh because unsaturated fats can become oxidised in stale nuts, making them harmful. You can tell if nuts are rancid by their paint-like smell and bitter or sour taste."
Notes to editors
Authors: ESC Press Office
Mobile: +33 (0) 7 8531 2036
Follow us on Twitter @ESCardioNews
The hashtag for ESC Congress 2019 together with the World Congress of Cardiology is #ESCCongress
Funding: Isfahan Cardiovascular Research Institute.
Disclosures: The authors declare they have no conflict of interest.
References and notes
(1)The abstract "Nut consumption, the risk of cardiovascular disease and all-cause mortality: Isfahan Cohort Study" will be presented during the session Controversies in dietary fat on Saturday 31 August at 09:00 to 10:30 CEST in Reykjavik - Village 2.
(2)Piepoli MF, Hoes AW, Agewall S, et al. 2016 European Guidelines on cardiovascular disease prevention in clinical practice. Eur Heart J. 2016;37:2315-2381.
ESC Congress is the world's largest gathering of cardiovascular professionals contributing to global awareness of the latest clinical trials and breakthrough discoveries. ESC Congress 2019 together with the World Congress of Cardiology takes place from 31 August to 4 September at the Expo Porte de Versailles in Paris, France. Explore the scientific programme.
The European Society of Cardiology brings together health care professionals from more than 150 countries, working to advance cardiovascular medicine and help people lead longer, healthier lives.
This press release accompanies a presentation at ESC Congress 2019 together with the World Congress of Cardiology. It does not necessarily reflect the opinion of the European Society of Cardiology.