Period and first menses and 10 years and 0.27 years old ahead of time of girl of the Han nationality

Period and first menses and 10 years and 0.27 years old ahead of time of girl of the Han nationality
Period and first menses and 10 years and 0.27 years old ahead of time of girl of the Han nationality
It is reported ' Reporter Fu DongHong) Seminar which hygiene Professor Ma Jun, chief of research institute of the Peking University children teenagers led, nationality 18 years old period and first menses and age and age analysis and research that variation tendency was carried on from 1995 to 10 years of 2005 of first menses of girl of the Han nationality 18 years old, period and first menses of girl of the Han nationality take place in the city and is earlier than the village, the Northwest is at the latest. In urban and rural areas to amalgamate girls in 2005 ' Count together the sample amount of urban girl and rural girl) Period and first menses and age are 12.76 years old, advance 0.27 years old than 1995. First menses of period is the milestone in women development course, it is the important sign of development in adolescence too, and it and reproduction health problem is highly correlated with with questions such as the social psychology,etc., the interest of studying in public health is clicked, but lack the analysis and research of the nationwide sample previously. Ma Jun introduces, the seminar spent 2005 and 1995 the national student's physical health surveyed and studied the data, contain 30 provinces ' District, city) 7 year old student 18 year old, probability of adopting Return Laws unit last period first menses age. The result reveals: In 2005, urban girls' period and first menses and age were 12.60 year old, rural girls was 12.92 year old, the city advanced the village by about 0.32 years old; East China, the intersection of period and the intersection of first menses and age, girl of North China, first, the southwest, middle and southern and taking second place in the Northeast, the Northwest is at the latest. 2005, city, the intersection of period and the intersection of first menses and age, girl of township, advance 0.22 year old and 0.34 year old than 1995 separately. It is the most that girls in the southwest are ahead of time, up to 0.45 years old. Ma Jun thinks, of our country in urban and rural areas the intersection of girl and the intersection of first menses and age, ahead of time, height, weight, the intersection of weight and index raise and grow secular trend advanced constantly to uprush generally accord with women, also reflected ahead of time facilitation to girl's period and first menses and age such as the material base in urban and rural areas and improvement of terms of the nutrition from the side. The period first menses incidence of the girl 9 years old in our country is 2.7 times before 10 years, period first menses incidence of girl 10 years old is 3.2 times before 10 years. Period and first menses and age not merely will make the individual's consciousness and maturity and physiological maturity of mood unable to match too early, it increases adaptation of adolescence such as individual to be closely related to a series of manhood diseases such as cardiovascular vessel disease, fat, breast cancer,etc. difficult, and following presenting the emergence of dangerous sexual behavior,etc. and a lot of psychological problems. How to tackle these changes, it is problems that school health and public health field are badly in need of solution at present.


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