1) Twelve is the present average age for the menarche - or start of menstrual periods, which marks puberty.

2) Delayed menarche, dysmenorrheal. Can conceive, delivered mostly girls.

3) Menarche at earlier age was associated with a higher BMD ( P & lt; 0.05 ).

4) As a result, girls reach menarche sooner and form clingy relationships, while boys become aggressive and sexually exploitive.

5) Objective To study the occurrences of menarche and first nocturnal emission and their relation to habitation, and psychological evolution a-mong university students.

6) Bring menarche of the menstruation after how long in vain?

7) Early menarche, late menopause,[http://sentencedict.com/menarche.html] or late 1st pregnancy increases risk. Women who have a 1st pregnancy after age 30 are at higher risk than those who are nulliparous.

8) No associations were found for nulliparity, mean age at menarche, and menstrual cycling pattern.

9) The leptin peak is reached at Tanner genital stage (G) 2-3 in boys, but in girls leptin continues to rise through puberty with a particular increase after menarche.

10) The association was not explained by childhood lung function or age at menarche.

11) Then, patients were divided into different groups according to related clinical factors such as diseases, times of birth, the age of menarche and the size of ovarian vein in various planar.

12) Objective : To analyze the correlative factors of age at menarche of Guangxi.