Female rats exposed to a screaming sound may have reduced ovarian reserve and fertility, according to the findings of a small animal study. The findings of the research were published in the journal 'Endocrine Society's journal, Endocrinology'. Ovarian reserve is the reproductive potential left within a woman's two ovaries based on the number and quality of eggs. A woman is born with a finite number of eggs and her body cannot create any more. Diminished ovarian reserve is the loss of normal reproductive potential in the ovaries due to a lower count or quality of the remaining eggs.