American leg is harmful to your health?

To American leg or health?

American leg is harmful to our health? the detailed discussion of this issue also needs more research.

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Beijing News weekly of the new knowledge

In the fashion sector, "American leg" is an eternal topic.

The "long legs" do what kind of understanding, weight are important indicators. Too thick legs, even and smooth as jade, is probably cannot be referred to as "long legs". However, this year's United Kingdom medical journal (BMJ) issued a leg circumference and health research, do not know do not cause panic and American leg women. If a one sentence summary of the paper's conclusion is: "when a man's thigh circumference of 60 cm below the incidence of cardiovascular disease and mortality with its lower and higher!"

The study began in 1987-1988, 1436 name adult male and adult female 1380 name participated in this study.

They all have cardiovascular disease. In the beginning, their physical indicators such as height, weight, leg, blood lipid, and so on is a a record, and lifestyle such as smoking, exercise, and so on are also classified records. Here's the "leg Wai" refers to the right thigh just hip circumference of the ditch. Next, their cardiovascular disease and the incidence of coronary heart disease is tracking records, mortality rates have also been statistics. Finally, the researchers found: leg in a value, the more slender legs, cardiovascular disease, the higher incidence and mortality rates; whereas in the above, the value has no effect. The use of different statistical model, this threshold is slightly different, roughly in between 55 to 60 cm. Researchers put 60 cm as a dividing line and made earlier conclusions.

Many people know this epidemiological findings can only show that these two phenomena, one cannot prove that is another reason.

In this case, all possible leg circumference and cardiovascular disease and mortality are only accompanying each other, and there is no causal relationship. People already know a lot of physical indicators and life factors and cardiovascular diseases. In data analysis, the author deletion of these factors, but said the conclusions remain. So the paper concluded that leg circumference can be used to predict a person have cardiovascular disease, as well as to the results of the risk.

BMJ is very authoritative medical journal.

The study's data collection and statistical analysis is also strictly. From research quality, caused great alarm than "carcinogenic" iodized salt is much higher. Then the fashion female is "being healthy, or beautiful" tangled up in the choice?

Publication of this paper at the same time the magazine has published an article edit comments, to the study of professional interpretation.

Comments that the existence of several problems:

First, leg circumference and cardiovascular morbidity and mortality is real? although in statistical analysis excluding people now know of the impact factors of cardiovascular disease, after all, it might be an unknown factor exists.

Although total more than 2000 people in the survey is not too small, but still need a larger sample size of investigation to confirm.

Second, how to interpret the leg Wai small increase in the incidence of cardiovascular diseases? leg rough should weight greater and greater weight to cardiovascular health is a basic accepted conclusions.

Although the author references other people of one study that leg Wai small may lead to reduction of lower limb, lower limb muscle muscular insufficiency on cardiovascular health adversely affected more than a weight reduction of beneficial effects. But research in this field are still very inadequate, after all, the reason is not so good.

Third, in the field of health, people have already made several physical indicators, such as body mass

index to do such a prediction. This new "leg Wai" indicators are better than the existing indicators more accurate? commentators answer "don't know".

Fourth, it is a very key point, for an index of risks, we care about the "have", but also to be concerned with the "big".

And leg Wai reduce the increase in the incidence of cardiovascular disease is not very big. For example, the smallest of the legs of some people, their incidence is also the only leg above the threshold more than twice the number of persons.

Finally, there is one of the most meaningful thing is through human intervention (e.g. physical training) for the thigh thicker, is not conducive to cardiovascular health?

All in all, such an authority published in academic journals, very serious research, in the eyes of academic peers there are many loopholes.

In science, it also requires more and more detailed research to confirm or deny. Prior to this, the fashionable women can only take it as entertainment, such as the legs can be rough for female consolation: my legs, my health and beauty legs of women do so tangled that conclusion is not sufficient evidence to support!

□ Cloud Centerless (United States Food Engineering doctorate)