Meet Your Menstrual Cycle

The Menstrual Cycle

Welcome to the empowering journey of your menstrual cycle. Here, we embrace its profound strength, which is unlocked through a deeper understanding of this natural process.

The menstrual cycle is an intricate biological function governed by sex hormones and influenced by others in the body. It is divided into four key phases: the menstrual phase, follicular phase, ovulation phase, and luteal phase. Two essential processes happen simultaneously during this cycle: the ovarian cycle and the endometrial cycle.

Essential Hormones in the Menstrual Cycle

Follicle Stimulating Hormone (FSH)

• Produced by the pituitary gland
• Oversees egg development in the ovaries
• Stimulates the growth of follicles in the follicular phase

Oestrogen

• Secreted by the ovaries
• Promotes the growth of the uterine lining during the follicular phase
• Plays a vital role in bone density, muscle development, cardiovascular health, brain function, and skin wellness

Luteinizing Hormone (LH)

• Released by the pituitary gland
• Induces ovulation in the ovulation phase
• Supports the function of the corpus luteum

Progesterone

• Produced by the ovaries (specifically the corpus luteum)
• Prepares and sustains the uterine lining for potential pregnancy
• Aids in mood regulation, relaxation, pregnancy, thyroid function, and blood sugar control

Testosterone

• Secreted by the ovaries and adrenal glands
• Assists with ovulation
• Impacts muscle mass, bone health, cognitive performance, motivation, and libido in both men and women
• When these hormones are in balance, the menstrual cycle remains healthy and consistent, fostering overall well-being.

Other Hormones Influencing the Menstrual Cycle

Insulin

• Produced by the pancreas
• Manages blood sugar levels
• Supports energy metabolism
• Impacts the regulation of sex hormones

Cortisol

• Secreted by the adrenal glands
• Regulates stress responses, metabolism, immune functions, and blood pressure
• Stress management is crucial, as high cortisol can disrupt the menstrual cycle
• In stressful situations, the body prioritizes survival over reproduction

By maintaining balanced blood sugar and managing stress through mindful practices, these hormones can be optimized, promoting healthier menstrual cycles.

The Four Phases of the Menstrual Cycle

Menstrual Phase (3-7 Days)

• The body sheds the uterine lining due to the absence of pregnancy
• Hormonal levels are low
• FSH levels start rising at the end of the phase, stopping the bleeding

Follicular Phase (7-10 Days)

• FSH stimulates follicle maturation in the ovaries
• One follicle releases oestrogen, promoting the growth of the uterine lining

Ovulation Phase (3-5 Days)

• Oestrogen reaches its peak, prompting a surge in LH
• LH triggers the release of an egg from the follicle
• Testosterone rises to facilitate ovulation
• This is the fertile window in the cycle

Luteal Phase (9-18 Days)

• The follicle transforms into the corpus luteum, producing progesterone
• The uterine lining thickens in preparation for potential pregnancy
• If fertilization occurs, the luteal phase continues; otherwise, progesterone declines, initiating the next menstrual cycle

The Ovarian and Endometrium Cycles

The menstrual cycle consists of two simultaneous processes:

Ovarian Cycle

Includes follicle development, ovulation, and corpus luteum formation.

Endometrial Cycle

Involves the growth and maintenance of the uterine lining.

Each individual’s cycle is unique. Tracking your cycle can provide insights into your personal rhythm and patterns.

Seasons and the Menstrual Cycle

The menstrual cycle can be likened to the four seasons, symbolizing the various energy shifts that occur:

Menstrual Phase → Winter

• Hormone levels are at their lowest
• A time to rest and regain energy
• Reflective and introspective mood

Follicular Phase → Spring

• Hormones begin to rise, boosting energy levels
• A more social and creative time
• A feeling of renewal and productivity

Ovulation Phase → Summer

• Hormones peak, bringing high energy
• Confidence, sensuality, and outgoingness dominate
• The most fertile and sociable part of the cycle

Luteal Phase → Autumn

• Hormones start to decline, preparing the body for rest
• Energy decreases, signaling a need for a slower pace
• Heightened emotional sensitivity and introspection
• Understanding this seasonal connection can help you align your lifestyle with your natural rhythm.

Acknowledgements:

Thanks to the following experts for contributing to this knowledge:

• Alisa Vitti, In the Flo
• Dr. Anthea Todd, Female Fundamentals
• Dr. Jorge E. Chavarro, Dr. Walter C. Willett, and Patrick Skerrett, The Fertility Diet
• Nadine Muller, Womb Power & Cycles (Bloom)