Left-handed Short life really ? !

In Latin , sinister means " left " , but it has a meaning as " ominous " ; and that "the right" dexter is a " lucky "means. In French , gauche meaning of the word " left, awkward "and "right "is to use a "smart smart "means the droit said.

The reason that the left-handed life is short, because the popular 1991 study , the study found that the proportion of left-handedness in the population decreased with increasing age . The researchers believe that living in the right-handed left-handed people who designed the society, they are traffic accidents and serious injuries more likely. More likely to experience Left-handed power tool accidents, wrist fractures and depression.

In 1992, psychologist Stanley Cologne pointed out that it is these accidents result in greatly reduced the average life expectancy left-handed . In California, thousands of death certificates to study after the life of Cologne found that left-handed than right-handed about as much as nine were short .

For the Cologne study , please forgive our doubts , do not just because it double " mold "hand , left-handed have life shortened it?

If you are a left-handed , never from the doldrums. In 2000, Pennsylvania State University researchers found that the mystery of the left-handed , just a simple statement can be explained. Many of our elderly are in fact looking at right-handed when a child is in their left-handed, only later pressured to change the handedness. In this regard, we have only to look at Catholic schools in the child. If he is a lefty , he will be Mother Teresa 's "special attention " , and finally to use his right hand . Of course, this practice is not so popular today .

Although some research shows left-handed early die sooner , but there are two recently were published in "Lancet" and " British Medical Journal , "the study launched an investigation , both of which track thousands The right-handed and left-handed and found no difference in life expectancy .

From this, the mystery of left-handed and not so easy to solve . For whatever reason , whether it is dominated by the right-handed person 's sense of pressure in society , or the fear and trepidation on the shortened life expectancy , left-handed in the depression, drug use , allergies and the incidence of schizophrenia is indeed higher. However, the left-hander also has many unique advantages , some sports are more good to play with them , such as fencing, tennis and baseball , not to mention they often learn best , IQ higher. Although the left-handed only 10% of the U.S. population , but 11 former U.S. presidents as much as five left-handed.