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味精是迄今为止一致的最安全的食物添加剂之一，在日常剂量下，没有有力的科学证据表明其毒副作用。
其实，很多同志觉得吃味精对身体有害，不过是人云亦云罢了。听得多了，心里将信将疑，一旦身体有些不适就容易归因到味精身上。反过来根加深了“使用味精对身体有害”的印象。这个当属于心理学而非医学的问题。
所以建议大家使用味精不用担心过多，放或不放、多用少用，按家人的口味就可以了。
下面是wiki百科中对这一问题所作的文献综述
其中红色的文字支持味精无害，蓝色的反对。可见持反对意见的人基本上都是基于个案的报告，如1968的Dr Ho，没有相应对照组，或控制其它因素。很难说是科学依据。
Health Concerns
In 1959, the FDA classified MSG as a "generally recognized as safe", or GRAS, substance. This action stemmed from the 1958 Food Additives Amendment to the Federal Food, Drug, and Cosmetic Act, which required premarket approval for new food additives and led the FDA to promulgate regulations listing substances, such as MSG, which have a history of safe use or are otherwise GRAS.
Since 1970, FDA has sponsored extensive reviews on the safety of MSG, other glutamates and hydrolyzed proteins, as part of an ongoing review of safety data on GRAS substances used in processed foods. One such review was by the Federation of American Societies for Experimental Biology (FASEB) Select Committee on GRAS Substances. In 1980, the committee concluded that MSG was safe at current levels of use but recommended additional evaluation to determine MSG's safety at significantly higher levels of consumption.
Additional reports attempted to look at this. In 1986, FDA's Advisory Committee on Hypersensitivity to Food Constituents concluded that MSG poses no threat to the general public but that reactions of brief duration might occur in some people.
Other reports have given the following findings:
* The 1987 Joint Expert Committee on Food Additives of the United Nations Food and Agriculture Organization and the World Health Organization placed MSG in the safest category of food ingredients.
* A 1991 report by the European Community's (EC) Scientific Committee for Foods reaffirmed MSG's safety and classified its "acceptable daily intake" as "not specified", the most favourable designation for a food ingredient. In addition, the EC Committee said, "Infants, including prematures, have been shown to metabolize glutamate as efficiently as adults and therefore do not display any special susceptibility to elevated oral intakes of glutamate."
* A 1992 report from the Council on Scientific Affairs of the American Medical Association stated that glutamate in any form has not been shown to be a "significant health hazard".
* A 1995 FDA-commissioned report acknowledged that "An unknown percentage of the population may react to MSG and develop MSG symptom complex, a condition characterized by one or more of the following symptoms:
o burning sensation in the back of the neck, forearms and chest
o numbness in the back of the neck, radiating to the arms and back
o tingling, warmth and weakness in the face, temples, upper back, neck and arms
o facial pressure or tightness
o chest pain
o headache
o nausea
o rapid heartbeat
o bronchospasm (difficulty breathing)
o drowsiness
o weakness."[6]
* A 2002 report from researchers at Hirosaki University in Japan found rats fed on diets high in MSG suffered eye damage. Lead researcher Hiroshi Ohguro said the findings might explain why, in eastern Asia, there is a high rate of normal-tension glaucoma.[7]
Issues surrounding these health implications of MSG consumption are the subject of much debate. A considerable body of anecdotal evidence exists suggesting negative health effects, but this has not yet been supported by recognised research.
In April 1968, Dr Ho Man Kwok wrote an article for the New England Journal of Medicine where he said, "I have experienced a strange syndrome whenever I have eaten out in a Chinese restaurant, especially one that served northern Chinese food. The syndrome, which usually begins 15 to 20 minutes after I have eaten the first dish, lasts for about two hours, without hangover effect. The most prominent symptoms are numbness at the back of the neck, gradually radiating to both arms and the back, general weakness and palpitations...".
This comment began a global health scare about MSG and "Chinese restaurant syndrome" was born. Considerable research has failed to find any syndrome related to MSG (or in fact any negative health effects at all), and Chinese restaurant syndrome is largely resigned to urban legend status. However, the damage was done, and MSG is still thought of as suspect by a large proportion of the general public, and many foods continue to be labelled "MSG free". [8]
[ 本帖最后由 y12345678 于 15-9-2007 09:33 编辑 ] |
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楼主: 疯狂主妇
发表于 10-9-2007 12:18:44
)，还没有见过大名鼎鼎的老墙,虽然照片看了不少
发表于 10-9-2007 22:18:03
楼主
～～～气到没力气了～～～ 
