Menarche is a significant marker of maturity and puberty in girls, it transition influenced by different biophysical factors. This study was carried out to determine the age, seasons influence body mass index (BMI) on menarche. A total 450 girls’ between ages 10 19 years participated study. Age at menarche obtained via recall quo cross sectional method. Parameters measured were; standing height...

Objectives. Menarche occurrence is influenced by genetic and environmental or external factors. The influence of factors that affect age at menarche vary in different populations. Material methods. Anthropological survey was carried out primary secondary schools rural urban places North Bačka region Vojvodina (North part the Republic Serbia). investigation performed between 2017-2020, data used...

BACKGROUND The ovary is an important site where gene variants modulate pubertal timing. The cannabinoid receptor 2 (CB2) is expressed in the ovary, plays a role in folliculogenesis and ovulation, and can be modulated by estrogens. Obesity is strictly associated with early menarche and is characterized by sex hormone and endocannabinoid derangement. AIM In this study, we investigated the role ...

The aim of this study was to represent the trend of early menarche and to assess the association of age at menarche with anthropometric profiles of Korean children and adolescents. A cross sectional survey was conducted with 13,371 girls aged 10 to 18 yr, recruited nationwide from April, 2005 to March, 2006. Height, weight and waist circumference of the subjects were measured; and the subjects ...

BACKGROUND Research shows that the age at menarche, as an essential element in the reproductive health of women, had been decreasing in the 19(th) and 20(th) centuries, and shows a huge variation across different countries. There are numerous studies performed in Iran reporting a range of age at menarche. Thus, this meta-analysis aimed to determine the overall mean age at menarche of the girls ...

Background: Menstruation is a normal physiological process that begins during adolescence and many a times associated with various symptoms that occurs either before or during the menstrual flow. Many of the adolescent girls experience some problems associated with menstruation, which might indirectly have an impact in their academic excellence, sports activities and their selfesteem. Aim: To s...

BACKGROUND Adolescent girls aged 15-19 bear a disproportionate burden of negative sexual and reproductive health outcomes in low- and middle-income countries. Research from several high-income countries suggests that early age at menarche is an important determinant of sexual and reproductive health. We conducted this systematic review to better understand whether and how early menarche is asso...

OBJECTIVE To compare the age at menarche obtained by recall method according to the time elapsed since the event, in order to verify the importance of the recall bias. SUBJECTS AND METHODS Were evaluated 1,671 girls (7-18 years) at schools in Campinas-SP regarding the occurrence of menarche by the status quo method (menarche: yes or no) and the recall method (date of menarche, for those who m...

STUDY QUESTION Is sugar-sweetened beverage (SSB) consumption associated with age at menarche? SUMMARY ANSWER More frequent SSB consumption was associated with earlier menarche in a population of US girls. WHAT IS KNOWN ALREADY SSB consumption is associated with metabolic changes that could potentially impact menarcheal timing, but direct associations with age at menarche have yet to be inve...

The phylogenetic, ontogenetic and seasonal hypotheses on the annual periodicity of menarche were tested. Data from European, Asian (Caucasian, Mongolian and Caucaso-Mongolian people from the northern hemisphere) and Chilean (Caucaso-Amerindian from the southern hemisphere) populations were compared with data from Hungary (Caucaso-Mongolian Europeans from a northern temperature zone) and Madras,...