This episode is brought to you by Natural Cycles: The company changing the contraception game with the world’s first FDA-cleared birth control app. Whether you're looking to prevent pregnancy or plan for it, the Natural Cycles app offers a non-hormonal, non-invasive alternative to traditional birth control. Right now, you can get 15% off an annual subscription plus a freeBluetooth thermometer when you visit https://www.naturalcycles.com and use promo code VALERIA at checkout. Natural Cycles is for 18+ and does not protect against STIs. Always read and follow the instructions for use. In this episode of Not Alone, Valeria sits down with Dr. Elina Berglund Scherwitzl, a former particle physicist turned femtech innovator, and the co-founder of Natural Cycles, the first FDA-cleared birth control app. Together, they dive into how Dr. Elina’s background in physics led her to develop a groundbreaking algorithm that helps women better understand their bodies, and offers a hormone-free alternative to traditional birth control. The conversation explores everything from the skepticism she faced in disrupting a multi-billion-dollar industry, to how data and wearable technology are transforming women’s health. Valeria and Dr. Elina discuss the phases of the female cycle, the negative effects of hormonal birth control, and the importance of empowering women with better education and tools for their reproductive health. They also touch on the future of personalized medicine, male contraception, and the potential of syncing our lives more intentionally with our bodies. 📱Follow Dr. Elina: Instagram: https://www.instagram.com/elinascherwitzl/?hl=en About Natural Cycles: Website: https://www.naturalcycles.com/ Dr. Elina’s Book Recommendation: This Is Your Brain on Birth Control Shop my looks from this episode: https://shopmy.us/shop/collections/2638644 Follow me: https://www.instagram.com/valerialipovetsky/  What we talked about:  0:19 - Halloween at the Lipovetsky’s house 1:20 - Introducing Dr. Elina Berglund Scherwitzle 2:42 - Start of interview 4:00 - Dr. Elina’s background as a physicist  5:13 - Starting Natural Cycles 7:00 - Creating an algorithm as a birth control method 9:00 - Skepticism about disrupting the birth control industry  12:50 - Explaining how Natural Cycles work 13:35 - How the algorithm works 14:39 - Effectiveness is the same as hormonal birth control 17:17 - Negative effects of hormonal birth control 19:00 - Perimenopause  21:00 - Changing sex ed 22:22 - Thoughts on male contraception 24:20 - Breaking down the phases of female cycles 26:15 - Monthly fertile window 27:40 - Women with Irregular cycles using Natural Cycles 29:00 - Getting Natural Cycles data to doctors 30:15 - Wearable technology 31:20 - Working with her husband 32:55 - The future of women’s health 36:53 - Can women sync their cycles? 37:20 - Users questions and comments 40:13 - Dr. Elina’s Book Recommendation Learn more about your ad choices. Visit megaphone.fm/adchoices