DHEA inherent risk

DHEA.  It is becoming a popular hormone therapy amongst women who have been diagnosed with low ovarian reserve and repeated IVF failures.  One of our Pro D presenters, Leslie Oldershaw, suggested it has too many inherent risk and women could look at other options. What is your understanding on using DHEA for sub fertility in this specific population of low ovarian reserve?  What are natural ways to increase DHEA?