The normal ovulatory menstrual cycle requires the presence of a mature hypothalamic-
pituitary-ovarian axis and highly coordinated hormonal feedback loops. Consisting of three …

The potential for repeated ovulation and menstruation is thought to have provided a
Darwinian advantage during the Palaeolithic. Reproductive conditions remained relatively …

The reproductive system of a female, unlike men, shows regular cyclic changes that
teleologically may be regarded as periodic preparation for pregnancy and fertilization. In …

Importance Early menarche is associated with adverse health outcomes. Trends toward
earlier menarche have been observed in the US, but data remain limited on differences by …

Menarche is defined as the first menstrual period in a female adolescent. Menarche typically
occurs between the ages of 10 and 16, with the average age of onset being 12.4 years. The …

Objective Although these agents are used frequently, prospective data comparing
serotonin/dopamine antagonists/partial agonists (SDAs) in youth regarding prolactin levels …

Background This study aimed to determine menstrual characteristics and related morbidities
among adolescent girls living in Sabah, North Borneo, a less-developed state in Malaysia …

Background The female pubertal transition is characterized by a rapidly changing hormone
milieu, which is heavily influenced by the first menstrual cycle–menarche. The first year …

Asthma is a frequent medical condition in adolescence. The worsening of the most common
symptoms perimenstrually is defined as perimenstrual asthma (PMA). The cause of PMA …

Importance Polycystic ovary syndrome (PCOS), characterized by irregular menstrual cycles
and hyperandrogenism, is a common ovulatory disorder. Having an irregular cycle is a …