Dr Elina Berglund, Co-founder at Natural Cycles: Hormone-Free Birth Control

Natural Cycles is the first and only FDA cleared birth control app in the United States and CE marked birth control app in Europe. The app is powered by a smart algorithm that is able to identify a woman’s daily fertility status from her basal body temperature. Each day, a user enters their temperature first thing in the morning and the algorithm gives out a red or green day:

    • Red days: You are fertile and should use protection during intercourse if preventing pregnancy.
    • Green day: You are not fertile and do not need to use protection during intercourse.

When used perfectly, Natural Cycles birth control is 98% effective in preventing pregnancy. Perfect use means not having unprotected sex on red days. Natural Cycles is 93% effective with typical use – which is due to all possible reasons, including having sex on red days.

We are on a mission to empower women with choice and give them knowledge about their reproductive health. The app is a hormone-free and non-invasive birth control option; we’re thrilled that we now have over 1.8 million registered users across 162 countries.

Hormone-Free Birth Control Online | Natural Cycles

How did you come up with the idea for the company?


At the time, I was working as a particle physicist at CERN (European Organization for Nuclear Research) and my husband and I were starting to talk about our future family.

I had been using a birth control implant throughout most of my 20’s after a negative experience with the birth control pill. While the implant worked quite well, I knew we wanted to start trying in a year or two so I wanted to remove it. In addition to it being invasive, I also wanted to take a break from hormonal birth control to give my body a chance to get back to its natural state well before pregnancy.

I quickly realized I was extremely limited when it came to finding a regulated birth control option that was both non-invasive and non-hormonal. As a particle physicist and researcher, I decided to take things into my own hands so I developed Natural Cycles.


What advice would you give to other aspiring female entrepreneurs?


 My first piece of advice would be to make sure your business has a purpose. And that purpose has to be so meaningful that it will keep you going when things get tough. Because…they will get tough at certain points. Every time I’ve gone through a hard time I think about all the women we’ve already reached and who love having a non-hormonal birth control option and all of the women out there who are looking for a product like ours, but maybe haven’t found it yet.


What can we hope to see from Natural Cycles in the future?


A lot! Next up is integrating the app with wearables. We recently announced that we’ve submitted a 510(k) Premarket Notification to the U.S. Food and Drug Administration (FDA). The purpose of the notification is to revise the labelling to expand the types of third-party thermometers, which include popular wearables already on the market, that can be used with our app. This will be a game-changer for users because it will provide them with another measurement option.

Our users and their Natural Cycles experience are our number one priority so we’re also working on a few other exciting projects and look forward to the next few months.