Research Library
Check out our latest research and learn how you’ve helped us further the field of female health.
Latest Article
Data Insights
How effective is Natural Cycles when used with Apple Watch?
Immediately following Apple’s announcement that they would be adding temperature sensors to Apple Watch, Natural Cycles users began asking for this integration.
Research at Natural Cycles

Published Research
Do changes in day length affect reproduction?
In this study, the Natural Cycles Research Team set out to investigate if summer days with increased daylight hours lead to increased ovulation rates and sexual behavior.

Published Research
Do COVID vaccines affect your period?
In previous studies, the Natural Cycles research team was able to find a small but temporary increase in cycle length after vaccination that went away in the following cycles.

Published Research
Insights on the responsibility of planning pregnancy with Natural Cycles
The aim of the two studies summarized here was to investigate the role that Natural Cycles played for Cyclers and partners who were using NC° Plan Pregnancy...
Hungry for more research?
Our peer-reviewed research is published in a top selection of scientific journals.