The Fifth Vital Sign

The Fifth Vital Sign - Book Summary (2024)

Lisa Hendrickson-Jack

The Fifth Vital Sign is about understanding the menstrual cycle as a vital sign of overall health and fertility, and learning how to monitor and interpret it to optimize health, avoid or achieve pregnancy, and identify potential health issues.

Key Ideas

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The menstrual cycle is a crucial indicator of a woman's health, akin to vital signs like heart rate or blood pressure. The primary event in the menstrual cycle is ovulation, which signifies a healthy functioning of the endocrine and reproductive systems. If ovulation does not occur, any bleeding experienced is not considered a true menstrual bleed.

The American Academy of Pediatrics (AAP) and The American College of Obstetricians and Gynecologists (ACOG) have both emphasized the importance of monitoring menstruation as a vital sign in adolescent girls. They suggest that any irregularities or abnormalities in the menstrual cycle can serve as early warning signs of potential health issues.

For instance, irregular ovulation could be an indication of an underlying health problem. Symptoms such as delayed ovulation, mid-cycle spotting, abnormal cervical mucus patterns, irregular periods, or amenorrhea (absence of menstruation) could be signs of an underlying health issue.

The menstrual cycle consists of two main stages: the preovulatory (follicular) phase and the postovulatory (luteal) phase. Fertile days occur in the preovulatory phase, leading up to ovulation, while the rest of the cycle is infertile once ovulation is confirmed. For effective use of fertility awareness as a birth control method, it's essential to differentiate between fertile and infertile days.

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"The Fifth Vital Sign" by Lisa Hendrickson-Jack is a comprehensive guide to understanding and appreciating the menstrual cycle as a vital sign of overall health. The book emphasizes the importance of regular ovulation and the role of hormones like estrogen and progesterone in maintaining optimal health. It also provides practical advice on tracking and interpreting menstrual cycles, and critiques the use of hormonal birth control. The book encourages women to take control of their fertility and health by becoming more body literate.

10 Main Facts:

  1. The menstrual cycle is a vital sign, just like heart rate, body temperature, respiratory rate, and blood pressure.
  2. Regular ovulation is a sign of health and is crucial for maintaining optimal health during reproductive years.
  3. The length of menstrual cycles can vary and does not have to be exactly 28 days to be considered normal.
  4. Hormonal birth control can distort our understanding of the menstrual cycle and lead to a variety of health issues.
  5. Fertility awareness involves tracking and understanding the menstrual cycle, which can be used for natural birth control, optimizing chances of conceiving, and monitoring overall health.
  6. Cervical mucus appears before ovulation and extends the fertility window to approximately six days of the cycle.
  7. Body literacy, the ability to monitor and understand signs of fertility, is every woman's right.
  8. Tracking the three main fertile signs - cervical mucus, basal body temperature, and cervical position - is essential for fertility awareness.
  9. Hormonal contraceptives increase the risk of developing deep vein thrombosis, ischemic stroke, cervical cancer, breast cancer, and liver cancer.
  10. The book encourages women to take control of their fertility and health by becoming more body literate, and to connect with other women who chart their cycles.

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