Many treatments which are effective in treating and eradicating cancer may impact fertility. These include chemotherapy, radiotherapy and surgery. Numerous chemotherapy drugs can decrease egg numbers and sperm counts in particular the drugs used for breast cancer which is the commonest cancer in women during their 30s, often a time when we are thinking of having children.
Unfortunately, not only does the treatment impact on fertility however the delays involved with effective treatment for cancer will lead to people needing to delay conception until their late 30s or 40s which also has a large impact on the chances of conceiving and the outcomes for mother and baby.