Pregnant Women with Diabetes Show Higher Rates of Toxoplasma Infection

Toxoplasma gondii is a parasite found worldwide that infects humans and animals. Most people acquire it without knowing—often through contact with cat feces, undercooked meat, or contaminated water. In healthy people, the immune system usually controls the infection without causing symptoms. However, in people with weakened immune systems, Toxoplasma can cause serious complications.

During pregnancy, Toxoplasma infection poses risks to both mother and developing baby. Researchers have long known that people with impaired immune function face greater danger from this parasite, but the connection between diabetes and Toxoplasma exposure had never been systematically studied—until now.

An international research team reviewed nine published studies involving pregnant women with diabetes. They looked for evidence of Toxoplasma infection using blood tests that detect antibodies—proteins the immune system produces after exposure.

Among pregnant women with diabetes, about 29% tested positive for signs of long-term Toxoplasma infection. Pregnant women with diabetes were more than twice as likely to show evidence of past exposure compared to pregnant women without diabetes.

The association held across different types of diabetes: Type 1 diabetes, Type 2 diabetes, and gestational diabetes mellitus (GDM). This consistency suggests the link is real and not due to chance.

Diabetes is known to weaken immune function. This study suggests that impaired immunity in diabetes may make pregnant women more vulnerable to Toxoplasma infection. Understanding this connection could help doctors identify which pregnant women with diabetes need closer monitoring.

Toxoplasma infection during pregnancy can harm fetal development. Finding a higher rate of exposure in diabetic pregnancies raises questions about whether this contributes to pregnancy complications in this group, though more research is needed to answer that question.

This systematic review opens the door to new questions. Researchers now need to investigate whether managing diabetes better might reduce Toxoplasma risk, and whether screening pregnant women with diabetes for this infection could improve outcomes.

If you are pregnant or planning pregnancy and have Type 1 diabetes, discuss all health concerns—including infection risk—with your healthcare team. They can provide personalized guidance based on your individual situation.

Source: BMC infectious diseases. Evidence type: PubMed indexed literature. Type1Cure is an information and intelligence hub, not a medical advice service. This article summarizes published research and does not provide diagnosis, treatment, or personal medical guidance. Always talk to your own care team before changing anything about your Type 1 diabetes management.