Celiac disease can contribute to infertility in both women and men, though the connection is complex and not fully understood. The link is strongest in people whose celiac disease is undiagnosed or untreated, where ongoing gut damage triggers a chain of nutritional and immune problems that interfere with reproduction. The good news: a strict gluten-free diet appears to reverse many of these effects.
How Celiac Disease Disrupts Fertility
Two main pathways connect celiac disease to reproductive problems: nutrient malabsorption and immune system disruption.
When celiac disease damages the lining of the small intestine, your body struggles to absorb key nutrients. Iron, folate, zinc, selenium, and fat-soluble vitamins all drop. These aren’t just general health nutrients. Zinc and selenium directly influence sperm maturation in men and the uterine lining’s ability to accept an embryo in women. Folate is essential for egg development and early pregnancy. Without adequate levels, the biological steps required for conception and implantation can break down.
The immune side is equally disruptive. Celiac disease triggers antibodies against tissue transglutaminase (anti-tTG), an enzyme found throughout the body, including in the placenta. In lab studies, these antibodies bind to cells in the developing placenta, impairing their ability to burrow into the uterine wall and form the blood vessel networks that nourish a pregnancy. Celiac disease also raises levels of inflammatory signals like IL-6 and TNF-alpha, which can further damage the uterine environment. On top of that, hormonal imbalances involving prolactin, FSH, and LH have been observed in people with active celiac disease, all of which play central roles in ovulation and sperm production.
Effects on Women’s Reproductive Health
Women with untreated celiac disease face a notably narrower window of fertility. The condition is associated with delayed onset of menstruation and earlier menopause, which together shorten the number of years in which conception is possible. Menstrual irregularities and absent periods are also more common, making ovulation unpredictable or absent entirely.
Conditions that frequently overlap with celiac disease, including thyroid disorders, polycystic ovarian syndrome, and endometriosis, add further obstacles. Weight loss and malnutrition, both common in active celiac disease, independently suppress the hormonal signals that drive ovulation. Sexual dysfunction, including pain during intercourse and reduced desire, is reported more often in women with celiac disease and can also play a practical role in difficulty conceiving.
Effects on Male Fertility
Celiac disease affects men’s fertility too, though it gets far less attention. Studies of men with celiac disease have found marked abnormalities in sperm shape and movement. Sperm motility, how well sperm swim toward an egg, was significantly reduced in men with untreated celiac disease who had trouble conceiving. Increased oxidative stress, a state where damaging molecules overwhelm the body’s defenses, is a recurring finding in infertile men with celiac disease and is linked to poorer sperm quality overall.
Erectile dysfunction and ejaculation disorders have also been reported. After starting a gluten-free diet, sperm shape showed improvement in studies, though motility did not clearly recover, suggesting some effects may be harder to reverse.
Pregnancy Risks When Celiac Is Undiagnosed
Even when conception happens, undiagnosed celiac disease raises the stakes during pregnancy. A large meta-analysis of 18 studies found that women with celiac disease had a 35% higher risk of miscarriage, a 68% higher risk of fetal growth restriction, a 57% higher risk of stillbirth, and a 29% higher risk of preterm delivery compared to women without the condition. Babies born to mothers with celiac disease weighed an average of 176 grams less at birth.
The critical detail: when researchers separated women who had been diagnosed early and were managing their disease from those who were undiagnosed, the picture changed dramatically. Women with undiagnosed celiac disease had a 73% higher risk of stillbirth and babies that weighed nearly 281 grams less than those born to healthy controls. Women who had been diagnosed and were following a gluten-free diet showed no increased risk for any of these complications compared to the general population.
How a Gluten-Free Diet Changes the Picture
A strict gluten-free diet is the only effective treatment for celiac disease, and the fertility data strongly favors early diagnosis and dietary management. Women diagnosed with celiac disease who follow a gluten-free diet have pregnancy outcomes comparable to those without the condition. They also respond better to assisted reproductive technology like IVF. The diet allows the intestinal lining to heal, restoring normal absorption of the nutrients critical for reproduction and reducing the inflammatory and autoimmune activity that disrupts the uterine environment.
Recovery isn’t instant. Intestinal healing can take months to over a year on a strict gluten-free diet, and nutrient stores need time to rebuild. For people trying to conceive, starting the diet well before attempting pregnancy gives the body the best chance to recover.
Should You Get Tested?
Despite the connection between celiac disease and fertility problems, routine screening of everyone visiting a fertility clinic isn’t currently standard practice. A screening study of men and women undergoing fertility treatment found unrecognized celiac disease in only about 0.45% of patients, a rate the researchers concluded did not justify universal screening.
That said, testing makes sense in specific situations. If you have unexplained infertility alongside symptoms like chronic bloating, diarrhea, fatigue, iron deficiency that doesn’t respond to supplements, or a family history of celiac disease, screening with a simple blood test is reasonable. Celiac disease is one of the more treatable causes of fertility problems, and catching it means the path forward, a dietary change rather than invasive procedures, is straightforward. Many people with celiac disease have mild or atypical symptoms, so the absence of classic digestive complaints doesn’t rule it out.