International Left-Handed Day: Increased probability of left-handed birth of a born baby in winter

A study by the University of Vienna points out that winter babies born have a higher chance of being left-handed, which is related to the daylight the mother receives during her pregnancy.

Sinochem's Reuters comprehensive media coverage, August 13 by many countries left-handed organizations called "International Left-Handed Day." Many famous people, including former U.S. President Bill Clinton, current President Oba, and Microsoft Computer founder Bill Gates, are left-handed individuals who have made the public more clever left-handed. In fact, only about 10% of the world's population is left-handed. The reasons for influencing left-handed or right-handed people are widely divergent. The latest study conducted by the University of Vienna in Austria pointed out that the birth month of a baby boy is highly related to the dominant hand.
According to a report quoted by the University of Vienna as part of the British "Daily Mail", winter babies born have a higher probability of being left-handed, which is related to the daylight the mother receives during her pregnancy. According to a survey conducted by 13,000 adults left-handed, psychologists at Vienna University found that only 7.5% of women and 8.8% of men were left-handed while the study found that the proportion of male left-handed was related to the month of birth.
Male babies born in winter increased the odds of left-handed birth Male subjects born between February and October, left-handed accounted for 8.2%. Male subjects, born between November and January, increased the percentage of left-handed individuals to 10.5%.
Ulrich Tran, the author of the study, speculated that the habit of using his right or left hand was not directly related to the gloomy weather from November to January but rather to the daylight between May and July with his mother and the first half of the year Irradiation related.
Baby boy left-handed affected by hormones The report, which has been published in the international scientific journal Cortex, supports the theory that men may be hormone-related with southpaws. Scientists believe that embryos in the uterus if subjected to higher concentrations of male hormone ergosterone, the probability of left-handed will be higher.
Scientists believe that a longer period of daylight exposure increases the concentration of miragone. However, babies born in winter are in embryonic periods in spring and summer, and these babies may also be exposed to higher concentrations of ketoprolin.
Findings Male Only The findings of this study are for men only because men's brains are affected by higher concentrations of mirabilone during fetal development than in women's brains. .