Written by: Lauren Chamberlain 

Edited and Reviewed By: Anabelle Clebaner MS, RDN

Your menstrual cycle isn’t just about fertility—it’s a vital sign of your overall health. A healthy cycle is often an indicator of wellness, while irregularities can be a red flag for potential health issues. Just like your heart rate, blood pressure, and respiratory rate, your cycle provides valuable insights into your body’s well-being. Understanding and tracking it can help you detect potential health problems early and take proactive steps toward better health. Whether you’re looking to optimize your health or manage a condition, your menstrual cycle is a powerful tool for self-awareness. Let’s dive into why your menstrual cycle is the ultimate monthly report card for your body.

Why Your Menstrual Cycle Matters

Ovulation is more than just a reproductive function—it’s a key indicator of your overall health. A regular menstrual cycle means your body is producing hormones in a balanced way, supporting everything from bone density to cardiovascular health. When your cycle is off, it might be your body’s way of signaling an underlying issue like hormonal imbalances, nutrient deficiencies, or even chronic conditions such as polycystic ovary syndrome (PCOS) or thyroid disorders.

The Menstrual Cycle as a Vital Sign

Medical professionals now recognize the menstrual cycle as the “fifth vital sign” because it reflects overall physiological health. A healthy cycle indicates that your hormones are functioning properly, while irregularities could signal potential concerns such as:

• Hormonal imbalances – Irregular periods can be a sign of PCOS, thyroid dysfunction, or estrogen dominance.
• Nutritional deficiencies – A lack of key nutrients like iron, zinc, and vitamin D can affect your cycle’s regularity and flow.
• Stress and lifestyle factors – High stress, poor sleep, or over-exercising can impact ovulation and menstrual health.

The Phases of the Menstrual Cycle

Understanding the four phases of the menstrual cycle can help you align your lifestyle, nutrition, and self-care routines with your body’s natural rhythm.

1. Menstrual Phase (1-6 days)
   • This phase begins with the shedding of the uterine lining.
   • Energy levels may be low, and the body benefits from rest and nutrient-dense foods.
2. Follicular Phase (7-21 days)
   • The body starts preparing for ovulation by increasing estrogen production.
   • This is an optimal time for creativity, social activities, and higher-intensity workouts.
3. Ovulatory Phase (1 day)
   • The body releases an egg, and estrogen peaks.
   • Many women experience increased energy, confidence, and libido during this time.
4. Luteal Phase (10-16 days)
   • Progesterone rises, preparing the body for a potential pregnancy.
   • PMS symptoms may appear, and the body may crave more rest and nourishing foods.

Aligning your activities with these phases can help you optimize performance, reduce stress, and support hormonal balance. Learn more about eating for your cycle here. 

What a Healthy Menstrual Cycle Looks Like

A normal menstrual cycle varies from person to person, but generally:

• Cycle length: 21–35 days (consistently within an 8-day range)
• Menstruation duration: 3–7 days with a blood loss of about 25–80 mL
• Ovulation: Occurs between days 10–23, followed by a luteal phase of 12–14 days
• Cervical mucus changes: 2–7 days of cervical mucus with at least one day of peak mucus before ovulation

If your cycle frequently falls outside these parameters, it might be time to investigate further.

What Your Menstrual Cycle Can Reveal About Your Health

Your menstrual cycle is an important indicator of your overall health, and any changes or irregularities can signal underlying issues. Here are some signs to watch for:

• No cycle: This could indicate anovulation, amenorrhea, stress or trauma, or possibly PCOS.
• Skipped cycles: Anovulation, stress or trauma, or potentially PCOS.
• Cycles longer than 35 days: Anovulation or PCOS.
• Cycles shorter than 21 days: May point to a luteal phase defect (and see “Luteal Phase shorter than 10 days”).
• Luteal phase shorter than 10 days: Low progesterone due to inadequate follicle or corpus luteum development, which may be linked to egg quality issues, inflammation, thyroid dysfunction, insulin metabolism problems, or nutrient deficiencies (especially magnesium, B vitamins, Vitamin D, iodine, zinc, selenium).
• Heavy flow: This can indicate estrogen dominance, often accompanied by painful cramps, tender breasts, headaches, fluid retention, and mood swings.
• Light flow/Dark or brown color: This could suggest inadequate corpus luteum development or uterine lining thickening, with low estrogen, FSH, or LH levels.
• Menstrual fluid odor: A possible sign of infection or dysbiosis.
• Cramping: Often associated with estrogen dominance.
• Bleeding outside of menstruation: Spotting in the luteal phase could indicate low progesterone production, often due to issues with follicular or corpus luteum development.
• Vaginal discharge/cervical mucus changes: Typically, the pattern will progress from dry → sticky → creamy → egg white → sticky → dry.

If any of these signs are present, it may be time to seek medical advice and investigate further.

Learn more about how optimizing gut health can help manage PCOS here: Understanding PCOS and Gut Health

How Hormones Influence Your Cycle

Two primary hormones drive the menstrual cycle: estrogen and progesterone.

• Estrogen helps build up the uterine lining and triggers the release of an egg during ovulation.
• Progesterone stabilizes the uterine lining, supports pregnancy, and helps balance estrogen’s effects.

When these hormones are out of balance, it can lead to irregular periods, mood swings, fatigue, and other symptoms. Proper ovulation is essential not just for fertility but for long-term health, as it helps protect against conditions like osteoporosis, cardiovascular disease, and even certain cancers.

Natural Ways to Balance Female Sex Hormones

Balancing hormones naturally can improve menstrual health and overall well-being. Here are key strategies to support hormone balance:

• Nutrient-Dense Diet – Prioritize whole foods rich in fiber, healthy fats, and essential vitamins. Foods like leafy greens, cruciferous vegetables, and omega-3 fatty acids help regulate estrogen levels.
• Gut Health Support – A healthy gut microbiome plays a crucial role in hormone metabolism. Probiotic-rich foods like yogurt, kefir, and fermented vegetables can aid digestion and hormone balance.
• Reducing Toxins – Environmental toxins found in the 4 P’s (plastics, pesticides, pollution and personal care products) can act as endocrine disruptors. Switching to natural alternatives can help minimize exposure to hormone-disrupting chemicals.
• Stress Management –  Chronic stress increases cortisol levels, which can disrupt estrogen and progesterone balance. Practices like meditation, deep breathing, and regular movement can help lower stress levels.
  • Common causes of stress:
    • Chronic stressors → oxidative stress, inflammation, immune dysfunction, thyroid suppression (“rest and repair”)
• Sleep Optimization – Aim for 7-9 hours of quality sleep each night, as inadequate rest can negatively impact hormone regulation.
  • Sleep signs that indicate something is “off”:
    • Light sleeping/lack of deep sleep → low progesterone
    • Waking frequently to urinate → sign of chronic stress
    • Waking between 1-3am, night sweats → liver detoxification

Tracking Your Cycle: A Powerful Health Tool

Charting your cycle helps you understand your body’s unique rhythm and detect early signs of imbalance. Fertility awareness methods (FAM) focus on tracking:

• Basal body temperature (BBT) – A rise in temperature indicates ovulation has occurred.
• Cervical mucus patterns – Clear, stretchy mucus signals peak fertility.
• Cervical position – Changes throughout the cycle, helping identify fertility windows.

Tracking these signs can give you a clearer picture of your health, help you time conception (or avoid pregnancy naturally), and even provide clues about underlying health issues.

Lifestyle and Nutrition for a Healthy Cycle

Supporting your menstrual health involves more than just tracking—it’s about optimizing your lifestyle:

• Eat nutrient-dense foods: Include healthy fats, iron-rich foods, and plenty of fiber.
• Manage stress: High cortisol levels can disrupt ovulation.
• Get enough sleep: Poor sleep affects hormone production.
• Exercise wisely: Overtraining can negatively impact your cycle, while moderate movement supports hormone balance.

The Pill and Menstrual Health

Hormonal contraceptives suppress ovulation, meaning they override your body’s natural cycle. While effective for pregnancy prevention, long-term use can deplete essential nutrients like folate, vitamin B6, and zinc. Research also shows that hormonal contraceptives can impact cervical health, making women up to 85% less likely to clear HPV infections, which increases the risk of cervical cancer. Additionally, long-term pill use has been linked to folate deficiency, affecting cell repair and increasing the chances of abnormal cervical changes. Nutritional support, including adequate folate, vitamin A, and B vitamins, may help mitigate some of these effects. Understanding these potential impacts can help individuals make informed decisions about their contraceptive choices.

Learn more about the steps to take before getting off hormonal birth control here.

Take Charge of Your Cycle

Your menstrual cycle is a powerful health indicator that deserves attention. By tracking and understanding your cycle, you gain insights into your body’s needs, allowing you to make informed decisions about your health. If you notice irregularities, don’t ignore them—your cycle is your body’s way of communicating with you.

Want to start tracking? Use a simple journal, an app, or work with a fertility nutritionist to get a deeper understanding of your unique cycle. Your period isn’t just a monthly inconvenience—it’s a crucial barometer of your health!

Sources  

https://pmc.ncbi.nlm.nih.gov/articles/PMC7643763

https://drbrighten.com/stopping-birth-control-side-effects

https://drbrighten.com/phases-of-the-menstrual-cycle

https://drhyman.com/blogs/content/how-do-i-naturally-balance-female-sex-hormones?_pos=19&_sid=1a211fc44&_ss=r

https://whnacademy.com/courses/fertility-treatment-plan/