What to Expect Before You're Expecting

What to Expect Before You're Expecting is the essential guidebook for anyone planning to start or grow their family. Expanding on the principle that a healthy pregnancy begins months before conception, this book serves as a complete tour-guide for the preconception journey. It provides practical, evidence-based steps for both partners to get their bodies into the best possible baby-making shape, covering everything from diet and weight management to lifestyle habits, medical checkups, and financial planning. The book demystifies the biology of baby-making, offers clear instructions on how to track fertility and time conception, and addresses common challenges with compassion and authority. For those facing bumps on the road, it offers an in-depth look at fertility workups and the latest treatments, ensuring readers feel informed, empowered, and prepared for every step toward welcoming a healthy baby.

What it argues

This model outlines the causal pathway from proactive preconception preparations by both prospective parents to improved reproductive function, which in turn increases the likelihood of conception and contributes to a healthy pregnancy and child. The model is inferred from the book's central thesis that a healthy pregnancy begins before conception.

Key ideas it contributes

• Preconception Health Behaviors — Encompasses the proactive lifestyle modifications undertaken by prospective parents to optimize their physical health for conception. This includes adopting a fertility-friendly diet, achieving an optimal body weight (BMI), engaging in moderate regular exercise, ensuring adequate sleep, managing stress, and ceasing the use of tobacco, excessive alcohol, and illicit drugs.
• Preconception Medical Management — Involves seeking professional medical oversight before attempting conception. This includes attending preconception checkups, ensuring immunizations are up-to-date, managing and controlling any chronic health conditions (e.g., diabetes, thyroid disorders), reviewing and adjusting medications for pregnancy safety, and undergoing recommended genetic carrier screening.
• Fertility Awareness Behaviors — The practice of tracking the female partner's menstrual cycle and physiological signs to identify the fertile window. This includes monitoring cycle length, basal body temperature (BBT), cervical mucus changes, and using ovulation predictor kits (OPKs) to time intercourse for maximal conception probability.
• Female Reproductive Function — The physiological state of the female partner's reproductive system, reflecting its readiness for conception and pregnancy. Key components include hormonal balance (e.g., estrogen, progesterone, FSH), regular ovulatory function, high-quality oocytes (eggs), and a healthy, receptive uterine environment.
• Male Reproductive Function — The physiological state of the male partner's reproductive system. This is primarily defined by the quantity and quality of his sperm, including sperm count, motility (movement), morphology (shape), and the underlying hormonal balance (e.g., testosterone) that supports healthy spermatogenesis.
• Conception Success — The successful fertilization of an egg by a sperm and subsequent implantation of the embryo in the uterine wall, resulting in a confirmed pregnancy. This is often measured as the time-to-pregnancy or the per-cycle probability of conception.
• Pregnancy and Child Health — The overall health outcome of the pregnancy and the resulting child. This includes a reduced risk of pregnancy complications for the mother (e.g., miscarriage, gestational diabetes, preeclampsia) and a reduced risk of adverse outcomes for the child (e.g., birth defects, low birth weight, future chronic diseases).