What are the odds of developing gestational diabetes during pregnancy?
Evidence quality 4.13/5
Eight-dimension review score against the quality rubric . Each dimension scored 1–5.
- D1 Source grounding
- 2/5
- D2 Source authority
- 4/5
- D3 Arithmetic
- 5/5
- D4 Uncertainty
- 4/5
- D5 Scope
- 5/5
- D6 Prose
- 5/5
- D7 Perception honesty
- 4/5
- D8 Caveat completeness
- 4/5
Lifetime probability · lifetime, activity-specific
1 in 13
7.9% lifetime chance
range 1 in 20 to 1 in 7.1
● your factors — click this risk ▾ to reveal
≈ As likely as
Perceived
Gestational diabetes mellitus (GDM) occupies an awkward middle ground in public awareness: most pregnant women have heard of it because it is part of routine prenatal screening, but few can cite a prevalence figure. The condition tends to be perceived as uncommon — something that happens to "other people" — even as rates have climbed steadily over the past decade. The glucose tolerance test at 24-28 weeks is familiar to virtually every woman who has been pregnant in the US, yet the possibility of a positive result is typically treated as a surprise rather than a roughly 1-in-13 base-rate event.
Rough estimate: Most pregnant women know GDM screening exists but underestimate how common a positive result is
Source: editorial intuition, not polled
Actual
~79 per 1,000 births in the US (2024)
US singleton first pregnancies, 2024
Show derivation
A JAMA Internal Medicine study (Lam et al., 2025) analysing every US birth certificate from 2016-2024 found gestational diabetes prevalence rose from 58 to 79 per 1,000 births over that period — a 36% increase. The CDC has historically cited 2-10% of US pregnancies. The 2024 figure of 7.9% is used as the point estimate. Because this is a per-pregnancy risk (not a lifetime cumulative risk across all pregnancies a woman may have), the normalized figure represents the probability per single pregnancy event. For a woman who has two pregnancies, her lifetime probability of experiencing GDM at least once is higher — roughly 1-(1-0.079)^2 ≈ 15%. The scope is set to activity_specific_lifetime because the risk is per-pregnancy, not a cumulative lifetime figure. Uncertainty band spans from the lower historical CDC range (~0.05) to the higher rates seen in some racial/ethnic subgroups (~0.14).
Caveats: This entry uses a per-pregnancy prevalence, not a lifetime cumulative probabilit…
This entry uses a per-pregnancy prevalence, not a lifetime cumulative probability. A woman who has multiple pregnancies faces a higher cumulative lifetime probability of experiencing GDM at least once. The 7.9% figure from the JAMA study is based on birth-certificate data, which captures diagnosed GDM only; undiagnosed cases are missed, so the true prevalence may be modestly higher. The secular upward trend is real — GDM prevalence has risen every year from 2016 to 2024 — and is driven by rising obesity rates, older maternal age, and in part by changing diagnostic thresholds. GDM usually resolves after delivery, but it is a strong predictor of future type 2 diabetes: roughly 50% of women with GDM develop T2DM within 5-10 years postpartum.
Regional breakdown
The headline figure averages across very different populations. Here’s how the probability varies by geography or context:
| Region / context | Lifetime probability | Notes |
|---|---|---|
| US overall (2024) | 1 in 13 |
JAMA Internal Medicine, 79 per 1,000 births |
| American Indian/Alaska Native women (US, 2024) | 1 in 7.3 |
Highest racial/ethnic group, 137 per 1,000 births |
| Asian American women (US, 2024) | 1 in 7.6 |
131 per 1,000 births; second-highest group |
| Non-Hispanic White women (US, 2024) | 1 in 15 |
Below national average |
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Gestational diabetes mellitus now affects roughly 1 in 13 US pregnancies, per a 2025 JAMA Internal Medicine study that analysed every US birth certificate from 2016 to 2024. The rate rose from 58 to 79 per 1,000 births over that nine-year window — a 36% increase — and climbed in every racial and ethnic group tracked. The CDC’s range of “5 to 9 percent of pregnancies” holds, and the current national figure sits squarely within that band and shows no sign of plateauing. The drivers are the usual suspects: rising maternal age, rising pre-pregnancy BMI, and in some centres, adoption of the more sensitive IADPSG diagnostic criteria.
The condition itself is transient — blood glucose typically normalises within weeks of delivery — but its downstream consequences are not. Roughly half of women who develop gestational diabetes will go on to develop type 2 diabetes within five to ten years postpartum, making GDM one of the strongest single predictors of future metabolic disease. During pregnancy, poorly controlled GDM raises the risk of macrosomia (large birth weight), shoulder dystocia, cesarean delivery, and neonatal hypoglycemia. The glucose tolerance test administered at 24-28 weeks is the standard screening tool, and it works well — the public-health problem is not detection but rather the steadily rising denominator of positive results.
Risk is not evenly distributed. American Indian/Alaska Native and Asian American women face the highest rates in the US — roughly 13 per 100 births, nearly double the national average. Obesity is the strongest modifiable risk factor, roughly tripling the odds. Maternal age above 35 roughly doubles the risk. Perhaps most strikingly, a woman who has had GDM in a prior pregnancy faces a recurrence risk of 30-50% in subsequent pregnancies. Conversely, young, lean women with no family history of diabetes have a GDM rate well below 3%. The honest framing: gestational diabetes is common, rising, well-screened-for, and manageable during pregnancy — but it is also a reliable early warning of a metabolic trajectory that deserves follow-up long after the baby arrives.
Claim ledger
Every number below is what each source reported, with the verbatim quote we relied on and how we arrived at our figure. Click any link to verify directly.
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[1] JAMA Internal Medicine — Gestational Diabetes in the US From 2016 to 2024
Gestational Diabetes in the US From 2016 to 2024- Statistic
GDM prevalence rose from 58 to 79 per 1,000 births (2016-2024), a 36% increase- Excerpt
“"Gestational diabetes shot up 36% over the nine-year period from 2016 to 2024, increasing from 58 to 79 cases per 1,000 births. [...] The condition increased across every racial and ethnic group." ”
- Source data from
- 2025-12-30
- Accessed
- 2026-04-24 · archived copy
- Calculation
- Lam et al. analysed all US birth certificates for first singleton pregnancies from 2016 to 2024 using National Center for Health Statistics data. The 79 per 1,000 figure for 2024 (7.9%) is the most current national estimate available. This is a per-pregnancy prevalence, not a lifetime cumulative risk. The 36% increase over nine years reflects both real epidemiological change (rising obesity, older maternal age) and diagnostic changes (wider adoption of the IADPSG criteria in some centres).
- Independence
- This JAMA study uses National Vital Statistics System birth certificate data, which is methodologically independent of the CDC's MMWR reports that use the same upstream NVSS data but present it in different time slices and formats.
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[2] Centers for Disease Control and Prevention — Gestational Diabetes
Gestational Diabetes- Statistic
Every year, 5% to 9% of US pregnancies are affected by gestational diabetes- Excerpt
“"Every year, 5% to 9% of U.S. pregnancies are affected by gestational diabetes. Managing gestational diabetes can help make sure you have a healthy pregnancy and a healthy baby." ”
- Source data from
- 2024-05-15
- Accessed
- 2026-04-24 · archived copy
- Calculation
- CDC gives the 5-9% range, which encompasses variation across years, diagnostic criteria, and populations. The JAMA study's 2024 figure of 7.9% sits within this range, consistent with the secular upward trend. CDC's page is a general-audience resource and does not provide year-specific breakdowns; the JAMA study fills that gap.
- Independence
- CDC's general diabetes page synthesises multiple data sources. The underlying birth-certificate data overlaps with the JAMA study's NVSS source, but CDC presents aggregate ranges rather than year-specific trend data.
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[3] Federal Interagency Forum on Child and Family Statistics (NCHS/NVSS data) — America's Children: Key National Indicators of Well-Being — Gestational Diabetes
America's Children: Key National Indicators of Well-Being — Gestational Diabetes- Statistic
From 2016 to 2022, the rate of gestational diabetes increased from 60 per 1,000 live births to 81 per 1,000; among women aged 40 and over, the 2022 rate was 151 per 1,000- Excerpt
“"From 2016 to 2022, the rate of gestational diabetes increased from 60 per 1,000 live births to 81 per 1,000. The rate of gestational diabetes in women age 40 and over was 151 per 1,000." ”
- Source data from
- 2024-01-01
- Accessed
- 2026-05-03 · archived copy
- Calculation
- This Federal Interagency Forum report draws on the same NCHS National Vital Statistics System birth-certificate data as the JAMA study. The 2022 figure (81 per 1,000 all live births) is consistent with the JAMA study's 2024 figure (79 per 1,000 singleton first pregnancies), with the slight difference explained by the different population denominators (all births vs. singleton first pregnancies). Both series confirm the secular upward trend and the ~8% order-of- magnitude estimate for current GDM prevalence. Used as the independent NCHS data anchor corroborating the JAMA study's trend and magnitude findings.
- Independence
- The Federal Interagency Forum on Child and Family Statistics is a separate agency from CDC that independently compiles and reports NCHS birth data. While it draws on the same NVSS source data, it is a methodologically and editorially independent reporting entity.