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Childhood cholesterol, blood pressure, weight and smoking predict adult heart disease

September 01, 2019

Paris, France - 1 Sept 2019: The first reliable evidence of a link between major cardiovascular risk factors in children - serum cholesterol, blood pressure, body mass index (BMI), and smoking - with cardiovascular disease in adults is presented today at ESC Congress 2019 together with the World Congress of Cardiology.(1) The study highlights the need to lay the foundations for heart health early in life.

Study author Professor Terence Dwyer of the University of Oxford, UK, said: "While previous research has found connections between smoking and BMI in childhood and adult cardiovascular disease, there was no data for blood pressure or serum cholesterol. In addition, it has not been possible to assess the contributions of BMI and smoking while taking cholesterol and blood pressure into account."

The study used data from the International Childhood Cardiovascular Cohort (i3C) Consortium. Data was pooled on serum cholesterol, blood pressure, BMI, and smoking from seven child cohorts in the US, Australia, and Finland. Information was collected from 1971 onwards on approximately 40,000 children aged 3 to 19 who were followed up at around age 50 for cardiovascular events leading to hospitalisation (heart attack, stroke, peripheral arterial disease) or all-cause death.

Hazard ratios for cardiovascular events were calculated for each risk factor separately, and for all risk factors simultaneously. The latter analysis estimated how important each risk factor might be when all the others are taken into account.

For cardiovascular events leading to hospitalisation, the associations for risk factors were: (2)
  • BMI: 10% rise --> 20% higher risk of an event.

  • Systolic blood pressure: 10% rise --> 40% higher risk of an event.

  • Serum cholesterol: 10% rise --> 16% higher risk of an event.

  • Adolescent smoking --> 77% higher risk of an event.
In the simultaneous analysis of risk factors, the associations with future risk were reduced, suggesting a shared contribution to risk by each, although the smoking association remained relatively unchanged. The associations for death were very similar to those found for cardiovascular events.

Prof Dwyer said: "The study shows a very strong relationship between standard cardiovascular risk factors in children and the probability of a heart attack or stroke later in life. A meaningful proportion of that risk appears to be laid down in childhood and has a detrimental effect independent of adult risk factor levels. Programmes to prevent heart attacks and strokes should put more emphasis on promoting healthy lifestyles in children."
-end-
Notes to editors

Authors: ESC Press Office
Mobile: +33 (0) 7 8531 2036
Email: press@escardio.org

Follow us on Twitter @ESCardioNews

The hashtag for ESC Congress 2019 together with the World Congress of Cardiology is #ESCCongress

Funding: National Heart, Lung, and Blood Institute (NHLBI).

Disclosures: None.

References and notes

(1) The abstract "Childhood risk factors and cardiovascular disease outcomes in adulthood. Preliminary findings from the International Childhood Cardiovascular Cohort (i3C) Consortium" will be presented during:

* The press conference "Too young to die" on Sunday 1 September from 11:00 to 12:00 CEST.

* Lifestyle scores best on Sunday 1 September at 11:00 to 12:30 CEST in Science Box 2 - Poster Area.

(2) In the main analysis of the data, the researchers estimated hazard ratios for each standard deviation in the four exposures. However, for greater ease of interpretation for non-statisticians, the approximate percentage increase in hazard ratio for absolute change in the exposures are presented in the press release.

About ESC Congress

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. http://spo.escardio.org/default.aspx?eevtid=1423

About the European Society of Cardiology

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 both a presentation and an ESC press conference at ESC Congress 2019 together with the World Congress of Cardiology. It does not necessarily reflect the opinion of the European Society of Cardiology.

European Society of Cardiology

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