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【社会人文】研究现实减少盐吸收会降低血压，
Reducing salt use lowers blood pressure, cuts health costs: study
Last Updated: Tuesday, May 8, 2007 | 2:42 PM PT
CBC News
Cutting Canadians' salt intake in half would eliminate high blood pressure in one million people and save the health-care system hundreds of millions of dollars a year, researchers in British Columbia say.
In Tuesday's issue of the Canadian Journal of Cardiology, health sciences Prof. Michel Joffres of Simon Fraser University in Burnaby and his colleagues looked at the effects of dramatically cutting sodium consumption.
A quarter of adults, about five million Canadians, have hypertension, a major risk factor for stroke and heart attack. Hypertension also contributes to kidney failure and dementia, according to the World Health Organization.
People only need 200 milligrams of sodium a day, but on average, Canadians consume about 3,500 milligrams a day, not including the salt people add to their food, according to Statistics Canada.
Reducing sodium intake by an average of 1,840 milligrams a day would decrease hypertension by 20 per cent and save the cost of medication to control high blood pressure, the researchers said, based on their statistical analysis of data from clinical trials and health surveys of Canadians.
"It would reduce the high blood pressure by about one million people, and reduce [health-care costs] by more than $430 million a year," Joffres told CBC News.
Lower hypertension rates could prevent or postpone about 7,000 deaths in Canada each year, he added.
Food industry in talks to curb salt
The study's estimates do not include additional money that would be saved if fewer people use hospital emergency services for strokes and heart failure, said Dr. Norm Campbell, a co-author of the study at the University of Calgary and a spokesperson for the Heart and Stroke Foundation.
The team urged governments to talk to the food industry about further reducing sodium content in processed foods. About 80 per cent of the sodium Canadians eat comes from processed food or food prepared in restaurants, Campbell said.
Some Canadian food manufacturers are already offering low-sodium alternatives because consumers are demanding it.
"What we're seeing is a growth in demand for information about sodium levels," said Elizabeth Margles, a spokesperson for Loblaw in Toronto.
European approach
In Finland and the United Kingdom, manufacturers have gradually cut the salt content in packaged foods, and labels clearly spell out which products are high in sodium — an approach advocated by WHO.
"The Food Standards Agency, which is a government organization, has set voluntary targets for the maximum amount of salt that should be in certain food products," said Naomi Robinson of the Consensus Action on Salt and Health in London, England. "Many sectors of the food industry have been compliant."
European researchers said the salt reduction has led to lower blood pressure, fewer heart attacks and strokes, and lives saved.
Canadian experts said the best approach here would be a gradual reduction in the salt put in processed foods so salt-loving palates will be able to adjust.
But the study applies the benefits of a low sodium diet to the general population when studies show only 15 per cent of people at most are sensitive to salt, Dr. Sandy Logan, a hypertension researcher at Mount Sinai Hospital's Samuel Lunenfeld Research Institute in Toronto and a consultant for the salt industry, said in criticizing the analysis.
"A population strategy will not provide benefit to most in the community, and the issue of harm to the general population has never been adequately addressed," said Logan.
The study's authors assume reducing salt is risk free, although there is no proof, he added. 本人已认领该文编译，48小时后若未提交译文，请其他战友自由认领。 Reducing salt use lowers blood pressure, cuts health costs: study
Last Updated: Tuesday, May 8, 2007 | 2:42 PM PT
CBC News
研究表明：减少食盐用量可降低血压，削减健康成本
更新日期：2007年5月8号，星期二，下午2：42（太平洋时间）
央行新闻
Cutting Canadians' salt intake in half would eliminate high blood pressure in one million people and save the health-care system hundreds of millions of dollars a year, researchers in British Columbia say.
将加拿大人食盐摄入量减至一半，每年会减少100万高血压患者，并为加拿大卫生服务系统节省数亿美元，研究者在不列颠哥伦比亚省说。
In Tuesday's issue of the Canadian Journal of Cardiology, health sciences Prof. Michel Joffres of Simon Fraser University in Burnaby and his colleagues looked at the effects of dramatically cutting sodium consumption.
在周二发行的《加拿大心脏学杂志》上，伯纳比市西门菲沙大学的医学教授Michel Joffres和他的同事们观察到消减食盐摄入量的显著效果。
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作者:admin@医学,生命科学 2010-10-07 23:53
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