Research shows that insulin resistance is significantly more common in women with PCOS than in healthy women, according to a 2026 cross-sectional study of 144 Saudi women. Women with PCOS had higher insulin resistance across all measurement methods tested (P less than 0.01) and elevated reproductive hormones, though bone density did not differ significantly between groups. Early detection and management of insulin resistance may help prevent long-term health complications in women with PCOS.
A new study of 144 Saudi women found that insulin resistance, a condition where the body doesn’t respond well to insulin, is much more common in women with PCOS (polycystic ovary syndrome) than in healthy women. According to Gram Research analysis, while bone health didn’t show major differences between the groups, the findings suggest that managing insulin resistance early could help prevent serious health problems later. The research also hints that weight and vitamin D levels may play important roles in bone health for women with PCOS.
Key Statistics
A 2026 cross-sectional study of 144 Saudi women found that insulin resistance was significantly higher in women with PCOS compared to healthy controls across all diagnostic criteria (P less than 0.01).
According to research reviewed by Gram, women with PCOS in the study had significantly elevated luteinizing hormone levels and LH/FSH ratios (P less than 0.001), particularly in insulin-resistant subgroups.
The 2026 study of 144 participants found no significant differences in bone mineral density or T-scores between women with PCOS and healthy controls, though trends suggested higher bone density in obese PCOS women.
Vitamin D deficiency was similarly prevalent in both women with PCOS and healthy controls in the Saudi study, suggesting widespread vitamin D insufficiency in this population regardless of PCOS status.
The Quick Take
- What they studied: Whether women with PCOS have more insulin resistance than healthy women, and how this affects their hormones and bone health.
- Who participated: 144 women in Saudi Arabia: 72 with PCOS and 72 healthy women of similar age and weight. The study took place between December 2018 and June 2019.
- Key finding: Women with PCOS had significantly higher insulin resistance across all measurements tested (P less than 0.01), meaning the difference was very unlikely to be due to chance. They also had higher levels of hormones that control reproduction.
- What it means for you: If you have PCOS, getting your insulin resistance checked early and managing it could help prevent future health problems. However, this study doesn’t prove that insulin resistance directly damages bones, so more research is needed before making major treatment changes.
The Research Details
This was a cross-sectional study, which means researchers looked at a group of people at one point in time rather than following them over years. The team recruited 72 women with PCOS and compared them to 72 healthy women who were similar in age and body weight. This matching was important because it helped isolate the effects of PCOS itself rather than other factors.
The researchers measured several things: body measurements like height and weight, blood tests to check insulin and glucose levels, and bone density scans to see how strong the women’s bones were. They used three different methods to measure insulin resistance: fasting insulin levels, a calculation called HOMA (homeostasis model assessment), and a glucose-to-insulin ratio. Using multiple methods made their findings more reliable.
The study was conducted at a specialized research center focused on bone health at King Abdulaziz University in Saudi Arabia. This setting was appropriate because the researchers had access to advanced bone density equipment and expertise in both PCOS and bone health.
This research approach matters because it provides a clear snapshot of how common insulin resistance is in Saudi women with PCOS and how it connects to their hormones and bones. By comparing women with PCOS to matched healthy controls, the researchers could identify which health problems were specifically related to PCOS rather than other factors. Using multiple ways to measure insulin resistance strengthened their conclusions.
The study had good design elements: the control group was carefully matched to the PCOS group by age and weight, multiple measurements were used to assess insulin resistance, and the sample size of 144 was reasonable for this type of research. However, because this was a cross-sectional study, it shows associations but cannot prove that insulin resistance causes bone problems. The study was conducted in one location in Saudi Arabia, so results may not apply equally to women in other regions or ethnic backgrounds.
What the Results Show
The most striking finding was that insulin resistance was significantly higher in women with PCOS compared to healthy women across all three measurement methods used (P less than 0.01). This means the difference was very real and not due to random chance. Women with PCOS also had much higher levels of luteinizing hormone (LH), a reproductive hormone, and higher ratios of LH to another hormone called FSH. These hormone imbalances were especially pronounced in women with PCOS who also had insulin resistance.
Interestingly, when the researchers looked at bone mineral density (BMD), which measures how dense and strong bones are, they found no significant differences between women with PCOS and healthy controls. The T-scores, which compare bone density to healthy young adults, were similar in both groups. This was somewhat surprising because previous research suggested insulin resistance might weaken bones.
However, the researchers noticed some interesting trends when they looked more closely at subgroups. Women with PCOS who were obese showed a trend toward slightly higher bone density scores compared to non-obese women with PCOS. This suggests that body weight might influence bone health in women with PCOS, though the differences were not statistically significant.
Vitamin D deficiency was common in both groups at similar rates, suggesting that low vitamin D is a widespread issue in this population regardless of PCOS status. The researchers noted that vitamin D status might become important for bone health later in life.
The study revealed that insulin resistance in PCOS was associated with specific hormonal patterns. Women with insulin resistance had particularly elevated LH levels and LH/FSH ratios, which are key features of PCOS. This connection between insulin resistance and reproductive hormone imbalances is important because it shows how metabolic problems in PCOS are linked to reproductive dysfunction. The research also highlighted that vitamin D deficiency is a common issue affecting both women with PCOS and healthy controls in this Saudi population, suggesting environmental or dietary factors may play a role.
This study adds to existing knowledge about PCOS and insulin resistance. Previous research has shown that insulin resistance is very common in PCOS, and this study confirms that finding in a Saudi population. However, the finding that bone health was not significantly different between groups somewhat contradicts some earlier studies that suggested insulin resistance might harm bone density. The trends toward higher bone density in obese women with PCOS are interesting and suggest that the relationship between weight, insulin resistance, and bone health may be more complex than previously thought. The high prevalence of vitamin D deficiency in both groups aligns with other research showing this is a widespread issue in Middle Eastern populations.
This study has several important limitations. Because it was cross-sectional, it captured only a single moment in time, so researchers cannot determine whether insulin resistance actually causes bone problems or if other factors are responsible. The study included only women in Saudi Arabia, so the results may not apply to women in other countries or ethnic groups. The researchers did not measure some factors that might affect bone health, such as physical activity levels, calcium intake, or family history of osteoporosis. Additionally, the study was conducted between 2018 and 2019, so it does not include more recent data. Finally, while the sample size of 144 was reasonable, larger studies might reveal differences in bone health that this study was too small to detect.
The Bottom Line
If you have PCOS, ask your doctor to check your insulin resistance through blood tests. Managing insulin resistance through weight management, regular physical activity, and dietary changes may help prevent long-term health complications. Ensure adequate vitamin D intake and get your levels checked, as deficiency is common. These recommendations are based on moderate evidence from this and other studies. However, because this study did not prove that treating insulin resistance improves bone health, discuss with your doctor what approach is best for your individual situation.
Women with PCOS should pay attention to these findings, especially if they are experiencing irregular periods, difficulty with weight management, or other PCOS symptoms. Women in Saudi Arabia and similar climates with high rates of vitamin D deficiency should be particularly attentive. Healthcare providers caring for women with PCOS should consider screening for insulin resistance as part of routine care. Women without PCOS do not need to change their approach based on this study, though the vitamin D findings may be relevant to them as well.
Insulin resistance typically develops gradually over months to years, so early detection and management are important for preventing problems down the road. You might notice improvements in energy, weight management, and menstrual regularity within 3 to 6 months of addressing insulin resistance through lifestyle changes. However, effects on long-term bone health would take years to become apparent, so this is a long-term health investment rather than something with immediate results.
Frequently Asked Questions
Do women with PCOS have weaker bones than healthy women?
This study found no significant differences in bone density between women with PCOS and healthy controls. However, trends suggest that obesity and vitamin D status may influence bone health in PCOS, so more research is needed to understand long-term bone effects.
How common is insulin resistance in women with PCOS?
This study found that insulin resistance was significantly higher in all women with PCOS compared to healthy women (P less than 0.01). The exact percentage depends on how insulin resistance is measured, but it was present across all three measurement methods used.
What should women with PCOS do about insulin resistance?
Ask your doctor to check your insulin resistance through blood tests. Managing it through weight management, regular physical activity, and dietary changes may help prevent long-term health problems. Early detection and management are important for reducing complications.
Is vitamin D deficiency related to PCOS?
This study found vitamin D deficiency was equally common in both women with PCOS and healthy controls, suggesting it is a widespread issue in Saudi populations rather than specific to PCOS. However, adequate vitamin D is important for overall health.
Can managing insulin resistance improve bone health in PCOS?
This study did not prove that treating insulin resistance improves bone health, though it suggests a possible connection. More long-term research is needed to determine whether managing insulin resistance protects bones in women with PCOS.
Want to Apply This Research?
- Track fasting blood glucose and insulin levels quarterly if you have PCOS, recording the specific values and dates. Calculate and log your HOMA-IR score (fasting glucose times fasting insulin divided by 405) to monitor insulin resistance trends over time.
- Set a goal to increase physical activity to 150 minutes per week and log completed workouts in the app. Track vitamin D supplementation daily and record vitamin D blood test results when available. Monitor weight weekly and note any changes in menstrual cycle regularity.
- Create a quarterly health review in the app comparing insulin resistance markers, weight, and vitamin D levels. Set reminders for annual bone density screening if you have PCOS. Track dietary patterns, especially carbohydrate intake and timing, to identify what helps manage insulin resistance for your body.
This research describes associations found in a single cross-sectional study and does not prove cause-and-effect relationships. The findings apply specifically to the Saudi women studied and may not generalize to other populations. This information is for educational purposes and should not replace professional medical advice. If you have PCOS or concerns about insulin resistance, consult with your healthcare provider about appropriate screening, diagnosis, and treatment options for your individual situation. Do not make changes to medications or treatment plans based solely on this research without discussing with your doctor.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.