To prevent reduction of bone density, we should perform between the heredityfactor and environmental factor, which may be effective to prevent and treat osteoporosis.
要防止骨密度的下降，应从遗传因素和环境因素加以控制，可以有效的防治骨质疏松症。
2
Heredity is not a factor in causing the cancer.
遗传并非导致这种癌症的一个因素。
《柯林斯英汉双解大词典》
3
It mainly has the heredity, the energetic nerve, endocrine, the infective agent or the extraneous factor and so on.