Health encyclopaedia - Alphabetical Topic List健康百科全书-按字母顺序排列的主题清单
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Causes of Infertility不孕的原因
Difficulty getting pregnant can be caused by lots of different things.困难怀孕，可造成许多不同的东西。
In women , infertility is most commonly caused by problems with ovulation (the monthly release of an egg). 在妇女 ，不孕是最常见的引起的问题与排卵（每月释放一个鸡蛋） 。 Some of these problems stop women releasing eggs at all, and some cause an egg to be released in some months and not others.一些这些问题的妇女停止释放所有鸡蛋，部分原因是一个鸡蛋被释放在一些个月内，而不是别人。 This can happen as a result of:这种情况可能是由于：
- Early menopause;早绝经;
- Polycystic ovarian syndrome;多囊卵巢综合征;
- Hormone problems (making too much or too little of certain hormones);激素的问题， （使过多或过少的某些激素） ;
- Being very underweight or overweight (ovulation often stops in women with anorexia);非常不足或超重（排卵，往往停止在妇女与厌食症） ;
- Exercising too much;行使太多;
- Sexually transmitted infections (STIs), such as chlamydia and gonorrhoea;性传播感染（性传播疾病） ，如衣原体和淋病;
- Side-effects of some medicines, such as anti-inflammatory painkillers, chemotherapy and radiation treatment (often used to treat cancer);毒副作用的一些药物，如抗发炎止痛药，化疗和放射治疗（通常用来治疗癌症） ;
- Ovarian cysts;卵巢囊肿;
- Certain genetic problems; and某些遗传问题;
- Certain chemicals in the environment.某些化学品在环境中。
Fertility problems in women can also be caused by conditions affecting the Fallopian tubes or urinary system, including:生育问题在妇女也可能引起条件影响输卵管或泌尿系统，其中包括：
- Endometriosis (a condition in which womb lining appears in other parts of the body, including the reproductive organs);子宫内膜异位症（一个条件，其中子宫内层出现在身体其他部位，包括生殖器官） ;
- Infection of the uterus (womb) and Fallopian tubes (pelvic inflammatory disease);感染的子宫（子宫）和输卵管（盆腔炎） ;
- Surgery to the Fallopian tubes or uterus (womb); and手术输卵管或子宫（子宫） ;
- Large fibroids or cysts.大的子宫肌瘤或囊肿。
Infertility in women is also linked to age.不孕症的妇女也与年龄。 Women in their early twenties are about twice as fertile (likely to get pregnant) as women in their late thirties.妇女在其早期二十多约两倍，肥沃的土壤（可能怀孕） ，作为妇女在其晚约三十岁。 The biggest decrease in fertility appears to happen around the mid thirties.最大的生育率下降，似乎周围发生的中约三十岁。
In men , infertility is usually caused by a problem with the sperm. 在男子不育症通常是由一个问题与精子。 Some men don’t make any sperm, very few sperm or poor quality sperm.有的男人donâ € ™吨作出任何精子，极少数的精子或质量差的精子。 This can be caused by:这可以造成的：
- Hormone problems;激素的问题;
- Infections of the testicles;感染的睾丸;
- Tumours of the testes (testicles);肿瘤睾丸（睾丸） ;
- Side-effects of some medicines, including chemotherapy, radiation and illegal drugs;毒副作用的一些药物，包括化疗，辐射和非法毒品的;
- Spending a lot of time in hot environments – ie – saunas and hot baths;花了很多时间在酷热的环境中â € “ ，即â € ”桑拿和热水浴;
- Environmental factors – ie - a lot of exposure to chemicals, X-rays, or heavy metals ; and环境因素â € “ ，即-有很多接触化学品， X射线，或重金属;
- Varicocele (similar to a 'varicose vein' in the scrotum).精索静脉曲张（类似'静脉曲张'在阴囊） 。 Sometimes doctors can’t find a cause for infertility.有时医生canâ € ™吨找到一个不育的原因。 This happens in three out of ten cases.这发生在三列10例。
