Low ovarian reserve is a condition in which the ovary loses its normal reproductive potential and fertility decreases. In this case, the number and quality of eggs in the ovaries decreases, or the response of the follicles (fluid-filled sacs containing eggs) in the ovary to hormone signals from the brain decreases. Decreased ovarian reserve, decreased ovarian reserve, chocolate cysts (endometriosis) and other ovarian cysts, cyst removal with ovarian surgery, Hashimoto’s thyroiditis and other autoimmune diseases, early menopause in mothers, aunts, sisters, genetic diseases such as Turner syndrome, radiotherapy, chemotherapy, heavy smoking, and most commonly the aging process.