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Immune system changes in pregnant women place the women themselves, their unborn children, and their newborns at increased risk of foodborne illness. These illnesses can be worse during pregnancy and may lead to miscarriage or premature delivery. Some foodborne illnesses, such as Listeria and Toxoplasma gondii, can infect the fetus even if the mother does not feel sick.

Learn how irregular, painful, or heavy periods, can affect your health or make it harder to get pregnant.

Learn about endometriosis from the Office on Women’s Health.

Aprender lo que es el folato (ácido fólico) y lo que hace en el cuerpo, cuales alimentos son fuentes de folato, y de los suplementos de folato.

Recommended intakes and sources of folate, effects of deficiency and excess, groups at risk of inadequacy, and interactions with medications.

Find out what folate is and what it does in your body, what foods provide it, and about folate supplements.

A fact sheet that describes what is known about the relationship between pregnancy, miscarriage, abortion, fertility treatment and the risk of cancer.

A fact sheet about DES (a synthetic form of estrogen) and the health problems of children who were exposed to DES while in the womb.

Breast cancer treatment during pregnancy is the same as for nonpregnant women in the case of early disease. Advanced disease is usually treated with radiation and/or chemotherapy. Learn about breast cancer during pregnancy as well as possible effects on the baby in this expert-reviewed summary.

Breast cancer is the most common cancer in pregnant women and can be hard to detect because of changes in the breast that occur with pregnancy. Learn about the incidence, diagnosis, and treatment of breast cancer during pregnancy, as well as the effect a history of breast cancer can have on future pregnancies and children.