抽烟是引起几种严重疾病的病因。
如果你不制造病因，疾病不会无端侵入你的身体。
这些发现可能还能够解释一些饮食性疾病的病因。
They may also help explain the cause of some eating disorders.
亦或，存在一种至今仍不为人们所知的引发心血管疾病的病因。
Or there may be an as yet unknown cause of cardiovascular pathology.
他们正对这一疾病的病因进行探索。
They're carrying out a research into the causes of the disease.
而遗传基因、肝炎、自体免疫疾病和用药也会成为病因。
Genetics, hepatitis, autoimmune disease and medication use also play a role.
荨麻疹是皮肤科较常见的皮肤黏膜过敏性疾病，它的病因复杂。
Urticaria is a common skin mucocutaneous allergic disease in dermatology. The etiology is very complex.
但是精神疾病的病因和疗法还是不得而知。
Yet the cause and cure for the mental sickness are still unknown.
医疗风险因素主要有主体因素、客体因素、疾病因素、仪器设备因素等。
The factors of subject, object, disease and equipments constitute the medical risk.
所有疾病的病因也是恐惧。
压力是许多疾病致病因素。
溃疡性结肠炎是一类病因尚未完全明确的疾病。
Ulcerative colitis is a kind of disease which causes are not specific.
科学家们千方百计寻找这种疾病的病因。
由于病因不甚明确，故对于这些疾病的治疗也存在许多困难。
Because of unknown etiology, these diseases are difficult to treat.
痰是肺系疾病常见的致病因素。
痰是肺系疾病常见的致病因素。
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