TALMedora Editorial | October 2026 | 4 min read
Miscarriage is common, and it is never a woman's fault. A new study asks a different question: can a woman's pregnancy history give an early hint about her future health? The research, published in Scientific Reports, found a link between a history of miscarriage and a higher chance of type 2 diabetes later in life. It is a link, not a cause, and many women with miscarriages never develop diabetes.
In Short
Researchers followed more than 39,000 women in the US for about 13 years on average.
Women whose pregnancy history showed a higher tendency to miscarry were more likely to be diagnosed with type 2 diabetes later.
A tendency toward gestational diabetes (diabetes in pregnancy) was linked to later type 2 diabetes too.
The study cannot say that miscarriage causes diabetes. It may be an early sign of something else.
This is not a test and doesn't predict any one woman's future.
What Did the Study Do?
The team used the Sister Study, a long-running US study of women who completed questionnaires about their health and pregnancies. Instead of simply asking "have you ever had a miscarriage?", they looked at each woman's whole pregnancy history. A woman who had two miscarriages out of two pregnancies is different from one who had two out of ten, and the study took that into account.
They also allowed for things that affect miscarriage risk, such as age and smoking. Then they followed the women over time to see who developed type 2 diabetes. Of the 39,468 women in that part of the study, 2,874 (about 7%) were diagnosed during follow-up.
What Did They Find?
A history that pointed to a higher tendency to miscarry was linked to a higher chance of type 2 diabetes later. This held even after the researchers allowed for weight and for diabetes in pregnancy.
The same history was linked to a higher chance of gestational diabetes in a later pregnancy.
A history of gestational diabetes was linked to later type 2 diabetes, as earlier research has also shown.
In an extra, exploratory look, the link with miscarriage appeared in women without a family history of diabetes, but not in those with one. This is an early clue that needs more research.
Why Might They Be Linked?
Nobody knows yet. The authors suggest that some early losses and later diabetes could share a root cause, such as how the body handles insulin, or inflammation. But miscarriage has many different causes, such as chromosome changes, problems with the womb, clotting issues or infection, so this can't explain every case.
What the Study Can't Tell Us
It shows a link, not a cause.
Women reported their own histories, sometimes from decades earlier, so memory errors are possible.
Most of the women were White, and all had a sister with breast cancer, so the results may not apply to everyone.
Women who already had diabetes at the start were left out.
The score used here is a research tool, not something doctors can use to predict diabetes in a patient.
What Should You Take From This?
If you've had a miscarriage, this doesn't mean you will develop diabetes, and it doesn't mean the loss was your fault. It is one more reason to keep up with regular health checks. Women with a history of miscarriage or gestational diabetes can ask their doctor about blood sugar testing from time to time, and about habits that help keep it healthy, such as staying active, eating well and keeping a healthy weight. If you've had pregnancy losses and are worried, talk to your doctor.
Common Questions
Does miscarriage cause type 2 diabetes?
This study can't say that. It found a link, which may point to a shared cause.
If I've had a miscarriage, will I get diabetes?
Not necessarily. Most women in the study did not develop type 2 diabetes.
Is it my fault?
No. Miscarriage is common, and there are many causes that no one controls.
Should I be tested for diabetes?
Ask your doctor. Regular checks are sensible for many adults, especially with a history of gestational diabetes.
Where was the study published?
In Scientific Reports, 2026.
Read the Original Study
Scientific Reports, 2026 (Article in Press): https://doi.org/10.1038/s41598-026-71644-6
Source: Venkat V, et al., Scientific Reports. This article is for general awareness and is not medical advice. If you have had a pregnancy loss, please talk to your doctor.