Daily habits such as nutrition, movement, sleep, stress and substance use can nudge fertility up or down. This page walks through the main lifestyle factors and simple targets you can discuss with a clinician. If you like working with numbers, you can later use tools such as the Advanced Pregnancy Chance Calculator, the Ovulation Calculator … Read more
Age changes natural conception odds and timelines. You can use the Fertility Calculator by Age to see a per cycle estimate, then come back to this guide to understand what drives those numbers and what to do next. Below is a simple age based model, plus an overview of how fertility tends to change across … Read more
The contraceptive implant is a small etonogestrel rod placed under the skin of the upper arm. In the United States, Nexplanon is approved for up to 5 years of use under its January 2026 FDA label. Approved duration can differ by country and product. Several cohort studies followed users beyond the original three-year label and … Read more
Withdrawal can reduce pregnancy risk compared with having no method at all when it is done very carefully, but in real life it fails often. Research suggests that pre ejaculate usually has little or no sperm when there has not been a recent ejaculation, and that some residual sperm in the urethra may decrease over … Read more
Ovulation “prediction” sounds straightforward, until you look at real cycles. Many popular apps lean on calendar maths, but ovulation varies by person and by month. If you already use an ovulation app or you are thinking about one, this guide brings together what studies and guidelines say, where app based predictions can go wrong, and … Read more