Long-term health · 5 min read
Type 2 diabetes risk around menopause
Does menopause raise diabetes risk? What changes in midlife, when to get screened under ADA and USPSTF guidance, what your A1C means, and what prevents it.
Your risk of type 2 diabetes rises through your 40s and 50s, mostly because of age, weight and changes in body composition rather than the final period itself. Women whose menopause came early, who had gestational diabetes, or who have a family history are at higher risk. The good news is that prediabetes is easy to detect with a blood test, and large trials show that its progression to diabetes can often be delayed or prevented.
What changes in midlife
Blood sugar tracks age more than menopause. SWAN, the Study of Women’s Health Across the Nation, measured fasting glucose and insulin every year in women going through a natural menopause. Unlike LDL cholesterol, which jumps around the final menstrual period, fasting glucose followed a steady pattern consistent with chronological aging, and insulin showed no clear step at menopause. This suggests the final period is not a switch that turns on diabetes.
Body composition shifts. Fat mass tends to increase and muscle mass to decrease across the transition, even when total weight changes little. Because muscle is a major site of glucose uptake, these shifts matter for insulin sensitivity. Read more in weight gain in perimenopause and blood sugar and insulin resistance.
Early menopause carries extra risk. The Menopause Society notes that women with premature or early menopause, or primary ovarian insufficiency, may be at increased risk of diabetes, along with heart disease and fracture.
Other contributors. Disrupted sleep, less physical activity and stress often cluster in midlife. A history of gestational diabetes, polycystic ovary syndrome, high blood pressure or a parent or sibling with diabetes also raises risk.
The numbers
According to the CDC’s National Diabetes Statistics Report, updated in September 2026:
- 40.1 million people in the US had diabetes in 2023, diagnosed or undiagnosed.
- 27.6% of adults with diabetes, about 11.0 million people, did not know they had it.
- 115.2 million US adults had prediabetes.
In the Diabetes Prevention Program, adults with prediabetes who received placebo developed diabetes at a rate of 11 per 100 people per year, which shows how quickly untreated prediabetes can progress in higher-risk people.
Screening: who, when and how often
| American Diabetes Association (2026) | USPSTF (2021) | |
|---|---|---|
| Who | Everyone from age 35; adults of any age with overweight or obesity plus at least one risk factor | Adults 35 to 70 with overweight or obesity |
| How often if normal | At least every 3 years, sooner if risk changes | Every 3 years is reasonable |
| Prediabetes | Test yearly | Offer or refer to effective prevention programs |
| Past gestational diabetes | Lifelong testing every 1 to 3 years | Consider screening at a younger age |
The USPSTF also suggests considering earlier screening for people with a family history of diabetes, past gestational diabetes or polycystic ovary syndrome, and for groups with higher rates of diabetes. It notes that a body mass index of 23 or higher may be a more appropriate cutoff for Asian Americans.
What the results mean
Any of three tests can be used. A result in the diabetes range is usually confirmed with a repeat test unless symptoms are obvious.
| Test | Normal | Prediabetes | Diabetes |
|---|---|---|---|
| A1C | Below 5.7% | 5.7% to 6.4% | 6.5% or higher |
| Fasting plasma glucose | Below 100 mg/dL | 100 to 125 mg/dL | 126 mg/dL or higher |
| 2-hour oral glucose tolerance test | Below 140 mg/dL | 140 to 199 mg/dL | 200 mg/dL or higher |
A random glucose of 200 mg/dL or higher with classic symptoms such as thirst, frequent urination or unexplained weight loss also indicates diabetes.
Prevention: what works
The strongest evidence comes from the Diabetes Prevention Program, a US trial of 3,234 adults with elevated fasting and post-meal glucose. Participants averaged 51 years of age, 68% were women and 45% were from minority groups, making it highly relevant to midlife women.
| Group | New diabetes per 100 people per year | Reduction vs placebo |
|---|---|---|
| Placebo | 11.0 | |
| Metformin 850 mg twice daily | 7.8 | 31% |
| Lifestyle program | 4.8 | 58% |
The lifestyle goals were modest: lose at least 7% of body weight and do at least 150 minutes of physical activity a week. Over three years, about 7 people needed to join the lifestyle program to prevent one case of diabetes. The USPSTF likewise concludes that lifestyle programs focused on diet, activity or both, as well as metformin, prevent or delay diabetes in people with prediabetes.
In practice for midlife women:
- Build and keep muscle. Strength training two or more days a week complements walking or other aerobic activity.
- Favor fiber, legumes, vegetables and whole grains and limit sugary drinks and refined starches.
- Protect sleep. Night sweats and early waking are common in perimenopause and worth treating.
- Ask about a structured program. Lifestyle programs modeled on the Diabetes Prevention Program are widely available, in person and online, and are what the USPSTF means by effective preventive interventions.
Where hormone therapy fits
The Menopause Society’s 2022 position statement summarizes the Women’s Health Initiative findings: women taking estrogen plus progestin had a 19% lower rate of new type 2 diabetes (16 fewer cases per 10,000 women per year), and women taking estrogen alone had a 14% lower rate (21 fewer per 10,000 per year). The benefit reverses when hormone therapy is stopped.
Even so, diabetes prevention is not one of hormone therapy’s approved uses, which are hot flashes and night sweats, prevention of osteoporosis, low estrogen from early loss of ovarian function, and vaginal symptoms. The statement says hormone therapy can be considered for women with type 2 diabetes who have bothersome menopause symptoms. See is hormone therapy safe? for the full balance of risks.
When to see a clinician
- You are 35 or older and have never been tested, or your last test was more than 3 years ago.
- You had gestational diabetes, have polycystic ovary syndrome, or went through menopause before 45.
- Your A1C was 5.7% or higher, and you want a prevention plan.
- You notice increased thirst, frequent urination, blurred vision or unexplained weight loss.
An endocrinologist can help when blood sugar is hard to control or the diagnosis is unclear. You can search for one in our directory.
Frequently asked questions
Does menopause cause type 2 diabetes?
Not directly. In SWAN, which followed women through the transition, fasting glucose changed in step with age rather than jumping at the final period, unlike cholesterol, and insulin showed no clear menopause effect. But midlife brings shifts in body composition, sleep and activity that raise risk, and women whose menopause came early or prematurely appear to have a higher risk of diabetes.
What A1C counts as prediabetes?
An A1C of 5.7% to 6.4% is prediabetes and 6.5% or higher is diabetes, usually confirmed with a second test. The matching fasting glucose ranges are 100 to 125 mg/dL for prediabetes and 126 mg/dL or higher for diabetes.
I had gestational diabetes years ago. Does that still matter?
Yes. The American Diabetes Association recommends lifelong testing every 1 to 3 years for anyone who had gestational diabetes, because it signals a higher risk of type 2 diabetes later. Make sure your current clinician knows about it.
Can hormone therapy prevent diabetes?
In the Women's Health Initiative, women taking estrogen plus progestin had 19% fewer new diabetes diagnoses and those taking estrogen alone had 14% fewer. But hormone therapy is approved for symptoms and bone protection, not diabetes prevention, and the benefit reverses after stopping. If you already have type 2 diabetes and bothersome hot flashes, it can still be considered.
Sources
- American Diabetes Association Professional Practice Committee for Diabetes. 2. Diagnosis and Classification of Diabetes: Standards of Care in Diabetes-2026. Diabetes Care, 2026
- US Preventive Services Task Force. Prediabetes and Type 2 Diabetes: Screening, 2021
- CDC. National Diabetes Statistics Report
- Knowler WC et al. Reduction in the incidence of type 2 diabetes with lifestyle intervention or metformin. N Engl J Med, 2002
- Matthews KA et al. Are changes in cardiovascular disease risk factors in midlife women due to chronological aging or to the menopausal transition? J Am Coll Cardiol, 2009
- The North American Menopause Society. The 2022 Hormone Therapy Position Statement. Menopause, 2022