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Consumption of lean meat associated with heart disease, according to a new study

 


Observational studies of about 20,000 people have shown that the higher the intake of lean and processed meats, the worse the heart function.

The study was presented at ESC Preventive Cardiology 2021, the online scientific conference of the European Society of Cardiology (ESC).

“Previous studies have shown an association between increased lean meat consumption and an increased risk of death from a heart attack or heart disease,” said study author Dr. Queen Mary University of London, UK. . Zahra Raisi-Estabragh says. “For the first time, we looked at the relationship between meat consumption and cardiac health imaging measurements, which may help us understand the underlying mechanisms of previously observed association with cardiovascular disease. not.”

The survey included 19,408 participants from UK Biobank. Researchers investigated the association between self-reported lean and processed meat intake and the anatomy and function of the heart.

Three heart measurements were analyzed. First, cardiovascular magnetic resonance (CMR) assessment of cardiac function used in clinical practice, such as measurement of ventricular volume and ventricular pumping function. Next, new CMR radiomixes used in research to extract detailed information from heart images such as shape and texture (indicating myocardial health). Third, the elasticity of blood vessels (stretchable arteries are healthier).

The analysis includes age, gender, deprivation, education, smoking, alcohol, exercise, high blood pressure, high cholesterol, diabetes, and other factors that may affect relationships, including body mass index (BMI) as a measure of obesity. Adjusted for.

Researchers have found that high intakes of lean and processed meats worsen cardiac health imaging measurements in all measurements studied. Specifically, people with high meat intake had smaller ventricles, decreased heart function, and stiff arteries. All of these indicate that cardiovascular health is deteriorating.

For comparison, the researchers also tested the relationship between cardiac imaging and oily fish intake. This was previously associated with improved heart health. They found that as the consumption of oily fish increased, heart function improved and arteries grew.

Dr. Raisi-Estabragh said: “The findings support previous observations linking lean and processed meat consumption to heart disease and provide unique insights into the association between heart and vascular structure and function.”

The association between cardiac health imaging and meat intake was only partially explained by hypertension, high cholesterol, diabetes, and obesity.

“It has been suggested that these factors may be the reason for the observed relationship between meat and heart disease,” said Dr. Raisi-Estabragh. “For example, increased lean meat intake raises blood cholesterol, which can cause heart disease. In our study, these four factors were meat intake and heart health. It has been suggested that it is involved in the association, but it is not. Full text. “

She said the study did not investigate alternative mechanisms. But she says: “There is some evidence that lean meat alters the gut microbiota, increases the levels of certain biotransformers in the blood, and increases the risk of heart disease.”

Dr. Raisi-Estabragh said, “This is an observational study and no causal relationship can be inferred. However, in general, it is wise to limit the intake of lean and processed meats for heart health reasons. It seems. “

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