This includes many cancer patients undergoing chemotherapy, asthma patients who require large doses of steroids and those taking immune-suppressing drugs after an organ transplant.
In young women and girls, direct radiation and chemotherapy drugs can stop egg production by the ovaries-meaning that along with the tumor, hopes for pregnancy are often eradicated.
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另外,为医治癌症而服用的化疗药物和进行的放射治疗都可能引起永久不育。
In addition, chemotherapy drugs and radiation treatment for cancer can cause permanent infertility.