10/06/2026
What happens to insulin needs across the menstrual cycle? 🩸
Together with , we looked at real-world data from 77 adults with type 1 diabetes using automated insulin delivery: 380 cycles and 10,000+ days of glucose, insulin, carb, and cycle data.
The results, now published in Diabetes Care, confirm what many people with periods and T1D have long suspected from lived experience. See what we found in the infographic. 👇
Thank you to everyone who shared their data. The study also raised new questions, especially how much these patterns vary from person to person. Two new studies are building on this work:
RIPPLE (open to US adults with any type of diabetes): https://www.tidepool.org/ripple
TIMES: https://www.dcberne.com/en/times-study/
📄 Read the study results: https://diabetesjournals.org/care/article/49/9/1673/172173/Effects-of-Menstrual-Cycle-on-Insulin-Sensitivity
Note: These are averages, not medical advice. Talk with your healthcare professional before changing your therapy.