Which would explain why amenorrhea is most common among ballet dancers, gymnasts, and long distance runners.

这也能解释为什麽闭经对芭蕾舞者 体操选手及长跑运动员来见。

In females, primary sex characteristic dysfunction includes amenorrhea or absence of menstruation, or oligomenorrhea or irregular menstrual cycle.

在女性中，第一性征的功能障碍包括闭经，即无月经，或月经减少，即月经周期不规则。

And people who might be at a higher risk factor for becoming amenorrheic, then we keep track that way.

而对于那些可能有高风险出现闭经的人，我们会这样进行跟踪记录。

An early symptom is agalactorrhea, whereas late symptoms include amenorrhea, low blood pressure, low blood sodium, low blood glucose levels, as well as fatigue and muscle loss.

早期症状包括产后无乳，而晚期症状包括闭经、压、、糖、疲劳和肌肉萎缩。

Later symptoms include amenorrhea, an absence of a normal menstrual cycle, even after a period of lactation, which is due to a lack of luteinizing hormone and follicle stimulating hormone.

晚期的症状包括闭经，即月经周期不正，甚至就在哺乳期后出现，这是由于缺乏黄体生成素和卵泡刺激素。

Bulimia can also lead to endocrine changes, the most common of which is menstrual irregularities in women, who might even develop amenorrhea, where either the normal menstrual cycle stops or menstruation doesn't start by age 15.

暴食症也可导致内分泌异，最见的是女性的月经失调，甚至会发展成闭经，即月经周期全部停止或15岁仍无月经初潮。

Because it causes streak ovaries, Turner syndrome is also the most common cause of primary amenorrhea, which is when a female has not begun breast development by age 13 or hasn't had menarche by age 15.

由于会导致条索状卵巢，因此特纳综合征也是原发性闭经的最见原因；原发性闭经是指女性在13岁之前没有乳房发育，或到15岁尚未月经初潮。