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This is an archive article published on May 4, 2013

Short Course: Why air pollution is bad for the heart

Air pollution has been linked to cardiovascular disease,and now researchers may be closer to understanding why: it increases atherosclerosis

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Why air pollution is bad for the heart

NEW YORK: Air pollution has been linked to cardiovascular disease,and now researchers may be closer to understanding why: it increases atherosclerosis,or hardening of the arteries,a known risk for heart attack and stroke. Researchers did ultrasound examinations on 5,362 men and women over 45 in six metropolitan areas,measuring the thickness of their right common carotid artery. Then they followed them for an average of two and a half years,comparing the thickening of their arteries as observed by ultrasound with air pollution data measured by concentrations of particulate matter. They found that the greater the level of air pollution,the greater the thickening of the carotid artery. The association persisted even after controlling for race,education,smoking and other health and socioeconomic factors.

Mediterranean diets brain benefits

NEW YORK: A large new study confirms that sticking to the Mediterranean diet fish,poultry,vegetables and fruit,with minimal dairy foods and meat may be good for the brain. Researchers prospectively followed 17,478 mentally healthy men and women aged 45 years and older,gathering data on diet from food questionnaires,and testing mental function with a well-validated six-item screening tool. They ranked their adherence to the Mediterranean diet on a 10-point scale. During a four-year follow-up,1,248 people became cognitively impaired.

But those with high adherence to the diet were 19 per cent less likely to be among them. This association persisted even after controlling for almost two dozen demographic,environmental and vascular risk factors,and held true for both African-Americans and whites.

 

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