Using fertility drugs has been linked to a higher risk of cancer, especially ovarian cancer. The risks of endometrial cancer and thyroid cancer are also linked to infertility drugs. The reason for the higher risk is not clear. Infertility drugs are a common treatment for infertility. Several studies have looked at the link between infertility drugs and cancer.
Infertility drugs increase risk of ovarian cancer
Many women take infertility drugs in the hopes of becoming pregnant, but a recent study suggests that these drugs may increase the risk of ovarian cancer. This association has only been found in women who have been on fertility drugs for at least 12 cycles. The studies also did not adjust for important confounding factors.
Of these cohort studies, only two used a suitable reference group – women who had never used fertility drugs. The other studies used standardised incidence ratios, which were unable to account for other factors, such as age at menarche or other causes of infertility.
The HOPE study, which included approximately 11,000 women, stratified ovarian cancer risk factors and adjusted for known confounding factors, did not find a significant association between fertility drug use and risk of ovarian cancer in a subgroup of women. However, there was no association between the use of fertility drugs and borderline ovarian tumors.
Infertility drug use increases risk of thyroid cancer
Infertility drugs have been associated with an increased risk of thyroid cancer, but a number of studies have failed to confirm this association. These studies did not account for infertility, parity status, or other confounding factors. More studies, including larger sample sizes, are needed to verify this association.
The authors of the study did not have access to all the information needed to make a conclusion. For example, they did not control for body mass index, or family history of cancer. This may explain why some of the associations between body mass index and thyroid cancer were not controlled in the study. Another limitation of the study is that the participants were young and the follow-up period was relatively short. Further, the study did not account for the age and number of cycles of infertility.
Infertility drug use is associated with an increased risk of thyroid cancer among women. The risk was nearly 2-fold greater for infertile women than for fertile women. These results suggest that longer follow-up periods are necessary to examine the relationship between fertility drugs and thyroid cancer. In addition, health care providers should discuss with infertile women the health effects of these drugs on their bodies.
Infertility drug use increases risk of endometrial cancer
Many studies have suggested that the use of infertility drugs can increase the risk of cancer in women. These studies, however, have had some limitations, including the small number of study participants, short follow-up times, and imprecise information regarding drug exposure and other possible correlates of cancer risk. This review focuses on the results of studies on the subject, and discusses the methods used.
The use of fertility drugs may increase the risk of endometrial cancer, but the exact association has not been determined. The risk is higher in women who used fertility drugs more than four months before the onset of symptoms. Women who have taken fertility drugs for several years before becoming pregnant are at greater risk of developing endometrial cancer than those who had never taken any fertility drugs.
There are several studies that show that women who are experiencing infertility have a greater risk of endometrial cancer. Although a few studies found no overall association, a high risk of cancer was associated with hCG and clomiphene use for 12 or more cycles. However, these studies have not examined the potential relationship between infertility drugs and other hormonally related cancers. Further research on this connection is needed to establish whether fertility drugs have any impact on the risk of endometrial cancer.