Research Library
Check out our latest research and learn how you’ve helped us further the field of female health.
Latest Article
Published Research
Menstrual Cycle Myth-Busting
There are many assumptions about the menstrual cycle, and some of the most common ones are that a regular menstrual cycle is 28 days long, with ovulation happening on day 14 and a 14-day luteal phase.
Research at Natural Cycles
Published Research
How Effective is Natural Cycles as Birth Control?
Effectiveness is always at the core of any birth control method. The standard measurement of contraceptive effectiveness is called the Pearl Index.
Published Research
Does the Covid vaccine affect your cycle?
When the Covid vaccines became available, one of the questions that kept coming up was: do Covid vaccines have an effect on the menstrual cycle?
Published Research
How does Natural Cycles Work with Irregular Cycles?
In this analysis, we investigated if users with irregular cycles (shorter than 21 days or longer than 35 days) can use Natural Cycles with the same effectiveness rate as those with regular cycles.
Hungry for more research?
Our peer-reviewed research is published in a top selection of scientific journals.