Does Empty Sella Syndrome Cause Infertility? Explained

An empty sella on an MRI does not automatically mean you are infertile ^[1]. Many women with a flattened pituitary gland maintain perfectly normal hormone function and can get pregnant without medical assistance ^[2]. However, if the condition disrupts your reproductive hormones—a diagnosis known as empty sella syndrome (ESS)—it can prevent ovulation and make conceiving difficult ^[3][4]. While healthy pregnancies are very possible with appropriate specialist treatment, success is individualized and relies on careful hormone management and a comprehensive fertility evaluation ^[3].

Understanding Your Diagnosis: Primary vs. Secondary

Whether an empty sella affects your fertility often depends on how it developed ^[4]:

• Primary empty sella: Cerebrospinal fluid presses into the space holding the pituitary, flattening it against the bone. Many people with primary empty sella have normal pituitary function and no fertility issues ^[2].
• Secondary empty sella: The gland is shrunken or flattened due to prior damage, such as pituitary surgery, radiation, a tumor, or head trauma. Hormone deficiencies are much more common here because they stem from the underlying damage, not just the physical flattening ^[4].

How the Pituitary Controls Your Cycle

The pituitary gland acts as a master control center, producing specific hormones that signal your ovaries to function ^[5]:

• Follicle-Stimulating Hormone (FSH): Supports the development of an egg (follicle) in the ovary and stimulates the production of estradiol (a primary form of estrogen) ^[3].
• Luteinizing Hormone (LH): A sudden surge in LH triggers ovulation (the release of the egg) and supports progesterone production afterward to prepare the uterus for pregnancy ^[5].
• Prolactin: Primarily involved in breast milk production, but elevated levels can suppress ovulation ^[6][7].

What Happens When Hormones Fail?

If ESS prevents the pituitary from releasing enough LH and FSH, it causes central hypogonadism ^[3][8]. In this state, your LH and FSH levels are either low or “inappropriately normal” given your low estrogen levels. Without proper LH and FSH signals, your body will not ovulate. This can lead to irregular or absent periods (amenorrhea) and symptoms of low estrogen, such as vaginal dryness and low libido ^[3][9][10].

Note: Taking standard hormone replacement therapy (like estrogen or progesterone pills) can relieve low-estrogen symptoms and protect your bones, but it will not make you ovulate or restore fertility.

Prolactin levels can also be abnormal in ESS ^[7]. If prolactin is high (hyperprolactinemia), it can stop ovulation and cause unexpected breast discharge (galactorrhea) ^[6]. However, high prolactin can also be caused by medications, thyroid issues, or pregnancy, so your doctor will need to confirm the exact cause before assuming it is solely due to the empty sella.

Fertility Treatments and Pregnancy Success

If you have absent or irregular periods due to ESS, do not wait the standard 6 to 12 months to seek fertility help. A full infertility evaluation—checking your fallopian tubes, ovarian reserve, and your partner’s sperm—is necessary to ensure no other factors are at play.

If pituitary dysfunction is the primary barrier, treatments include:

• Ovulation Induction: A reproductive endocrinologist can prescribe targeted therapies, such as gonadotropin injections or pulsatile GnRH, to stimulate your ovaries to release an egg ^[3]. Medical case reports document healthy term deliveries using these methods ^[3]. However, gonadotropins require strict specialist dosing and ultrasound monitoring, as they carry risks of multiple pregnancy (twins or more) and a serious condition called ovarian hyperstimulation syndrome.
• Prolactin Management: If elevated prolactin is confirmed as the root cause, dopamine agonist medications (like cabergoline or bromocriptine) can often lower prolactin levels and successfully restore ovulatory cycles ^[6].

Crucial Safety Steps Before You Conceive

Because the pituitary controls multiple critical systems, you must have a comprehensive hormone evaluation by an endocrinologist before attempting pregnancy ^[5][11].

• Adrenal Function (Cortisol): Untreated central adrenal insufficiency can be life-threatening, especially during the physical stress of pregnancy and labor ^[4][11]. If you are deficient, you will need glucocorticoid replacement therapy and a strict “sick-day” emergency plan for instances of vomiting or severe illness.
• Thyroid Function: Central hypothyroidism must be evaluated using “Free T4” levels, as standard TSH tests can be misleading in pituitary disease ^[11][12]. Importantly, thyroid medication should never be started until adrenal insufficiency is safely ruled out or treated.

During pregnancy, your body’s hormone demands change rapidly. You will need coordinated, ongoing care between your endocrinologist, obstetrician, and reproductive endocrinologist to adjust these medication doses safely ^[11].