However, radiotherapy may destroy the fertility of those patients who underwent RAT, resulting in the failure of fertility preservation.
8 The contribution of biological, reproductive, and lifestyle factors to the success or failure of fertility treatment is well established, 9 but the influence of emotional distress is inconclusive because of mixed results in psychosocial studies.
Nutritional deficiencies have been identified as causes of failure of both fertility and fecundity.
Lethality could be caused by the failure or defects at any stage of reproductive development, such as reduced fertility of male and female gametes, failure of fertilization, or more likely abortion of embryo development.
The continued progress and enhanced effectiveness of chemotherapy and radiotherapy has increased the survival rate of young female cancer patients (von Wolff et al., 2009) but major side effects of these treatments are premature ovarian failure and loss of fertility.
According to the Human Fertilisation and Embryology Authority (HFEA), inequalities in service provision, advancing age and repeated failures push 59% of fertility patients into the private sector.
But the researchers could find no association between high emotional stress and failure of the completed fertility treatment cycle.
Irrespective of the species evaluated, ovarian failure and the ensuing loss of fertility are driven by depletion and ultimate exhaustion of the oocyte-containing follicle reserve [ 6].
Only when the telomeres become critically short in later generations (G5 and G6) do telomerase-deficient mice show prominent premature aging symptoms, including impaired spermatogenesis and loss of fertility, bone marrow failure, atrophy of the small intestine, and immunosenescence-related disease (Herrera et al., 1999; Lee et al., 1998).
Perhaps even more important than the loss of fertility, age-related ovarian failure sets the stage in aging females for markedly increased risks of developing a large number of debilitating health issues, including osteoporosis, cardiovascular disease and cognitive dysfunction [ 1].
These tests have the potential to estimate the reproductive lifespan of the ovaries, which would allow an accurate estimation of fertility status and the risk of premature ovarian failure.
