Diabetes
Type 2 diabetes is rising twice as fast in women under 40 — and care hasn't caught up
Diabetes guidelines are largely written as if one protocol fits everyone. A major 2026 clinical review argues that's a problem — and that it's costing younger women in particular.
A 2026 Medscape clinical review makes a case that's overdue: diabetes is not a gender-neutral disease, yet diabetes care is still largely built as if it were. The review highlights that type 2 diabetes is now rising twice as fast in women under 40 compared with men in the same age group.
Part of the gap is biological. Hormonal shifts across a woman's life — the menstrual cycle, pregnancy, perimenopause and menopause — measurably change insulin sensitivity and glucose metabolism. The review notes insulin requirements can shift by as much as 15% across the luteal phase of the cycle alone, yet most diabetes management protocols make no allowance for it.
Part of the gap is also structural. Women remain underrepresented in the clinical trials that shape treatment guidelines, so sex-specific patterns in how glucose control behaves are often invisible in the data used to write those guidelines in the first place.
If your blood sugar feels harder to predict at certain points in your cycle or life stage than standard advice suggests it should be, that's not necessarily you doing something wrong. It's a reasonable prompt to track your own patterns across the month and bring that data to your diabetes team, rather than assuming a one-size protocol should already account for it.
What the research says
A 2026 Medscape clinical review reports that hormonal changes across a woman's life — including the menstrual cycle, pregnancy, perimenopause and menopause — significantly affect glucose metabolism and insulin needs, with insulin requirements shifting by up to 15% across the luteal phase alone. The review notes women remain underrepresented in the clinical trials underpinning diabetes guidelines, and that type 2 diabetes is now increasing twice as fast in women under 40 compared with men.
Medscape · Clinical Review, 13 July 2026 ↗Frequently asked questions
Why is type 2 diabetes rising faster in younger women?
A 2026 Medscape clinical review points to a combination of factors: hormonal changes across a woman's life that affect insulin sensitivity, and diabetes care protocols that were largely developed from trials where women were underrepresented. The result is that sex-specific patterns in glucose control are often not built into standard guidance, which may leave younger women's diabetes risk and management less well addressed.
Can my insulin needs really change across my menstrual cycle?
Yes — the same 2026 review notes insulin requirements can shift by up to 15% during the luteal phase of the cycle. If you notice your glucose control varying in a pattern that tracks with your cycle, it's worth logging it and discussing with your diabetes team, since standard protocols don't automatically factor this in.
The information on this website is educational and is not medical advice. Please consult your doctor if you have any doubts or further questions.