What do estrogen, progesterone, testosterone, cortisol, insulin, thyroid hormones, and melatonin actually do, and how do they work together?

In this lesson from my Rhythm & Flow course, I provide a practical overview of the body's major hormones and their essential roles in mood, energy, metabolism, stress, sleep, reproduction, and overall health.

You'll learn:

What the major hormones do and how they communicate

Why the menstrual cycle is considered the "fifth vital sign"

The four phases of the menstrual cycle and the physical and emotional changes that often accompany each phase

How hormones change throughout life—from puberty to the reproductive years, perimenopause, and menopause

How to begin recognizing your own hormonal patterns

Rather than thinking about hormones in isolation, this lecture introduces a systems-based framework for understanding how hormones interact and why symptoms often occur in patterns.

This video is one lesson from my comprehensive online course, Rhythm & Flow.

If you'd like to dive deeper into hormones, metabolism, menstrual health, perimenopause, nutrition, lifestyle medicine, and the root causes of hormonal imbalance, you can learn more here:

https://goodmood.thrivecart.com/rhythm-and-flow/

The course includes 10 modules and over 50 lessons covering:

Hormone foundations

Menstrual cycles and circadian rhythms

PMS, PMDD, PCOS, endometriosis, fibroids, and fertility

Perimenopause and menopause

Hormone replacement therapy (HRT)

Blood sugar, insulin, thyroid health, stress, sleep, inflammation, and gut health

Nutrition, supplements, herbal medicine, and lifestyle interventions

A downloadable workbook and integration tools

I'm Dr. Talia Marcheggiani, a naturopathic doctor and registered psychotherapist. I create evidence-informed educational resources to help people better understand hormones, metabolism, mental health, and whole-person health.

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In this lecture, Dr. Talia Marcheggiani, Naturopathic Doctor and Registered Psychotherapist, introduces hormone testing as one part of understanding hormonal health, while emphasizing that symptoms, history, and lived experience are more important than lab values alone. She explains that testing is meant to support care, not replace clinical context.

Dr. Talia describes hormones as signalling molecules that communicate between organs and act through receptors, feedback loops, and endocrine axes such as the HPT, HPA, and HPO systems.

The lecture focuses mainly on reproductive hormones, including estrogen, progesterone, testosterone, and cortisol, and how they relate to mood, sleep, stress, fertility, and metabolism.

A major topic is the timing of testing in the menstrual cycle. Dr. Talia explains the follicular, ovulatory, luteal, and menstrual phases and why days 3 and about 7 days after ovulation are key times for bloodwork. She notes that progesterone is best assessed in the mid-luteal phase and that cycle regularity and ovulation matter more than relying on a fixed calendar day.

The lecture reviews the main hormones individually. Estrogen is described as important for the uterine lining, skin, mood, libido, and long-term brain, bone, cardiovascular, and metabolic health. Progesterone is presented as calming, sleep-supportive, and protective against estrogen’s growth effects.

Testosterone is discussed in relation to libido, motivation, muscle, and androgen excess patterns such as acne, hair loss, and insulin resistance. Cortisol is covered as a circadian stress hormone that affects immune and metabolic regulation.

Dr. Talia also explains what testing can and cannot show. Blood testing can help assess ovulation, rule out other causes of symptoms, and guide treatment, including hormone replacement therapy safety. She contrasts serum testing with saliva and Dutch urine testing, stating a preference for serum because it is standardized and more clinically useful.

We close by reviewing patterns seen in conditions such as PCOS/PMOS, perimenopause, menopause, PMS, and PMDD, and by stressing that hormone care should also consider gut function, liver clearance, methylation, nutrition, sleep, stress, and insulin.

Join the 5-Part Decode Your Bloodwork Free course here: https://goodmood.thrivecart.com/decode-your-bloodwork/

For more on hormone health, join Rhythm & Flow: The Integrative Hormone Mastery Course. Learn more here: https://goodmood.thrivecart.com/rhythm-and-flow/

Dr. Talia Marcheggiani, an Ontario naturopathic doctor and registered psychotherapist, explores the complexities of thyroid function in a five-part series on understanding blood work.

She emphasizes that thyroid health cannot be assessed through TSH levels alone, sharing her own experiences with hypothyroidism to illustrate the gap between lab results and patient symptoms.

Dr. Talia details the thyroid's roles in metabolism and hormonal regulation, the significance of the HPT axis, and the need for comprehensive testing beyond standard metrics. The session also covers the prevalence of autoimmune conditions such as Hashimoto’s thyroiditis and discusses factors that influence thyroid hormone conversion. She stresses the importance of individualized treatment approaches and the connection between gut health and thyroid function, encouraging patients to be proactive in managing their health through informed discussions with healthcare providers.

0:05 Introduction to Thyroid Labs

2:29 Importance of Comprehensive Testing

5:16 Understanding Thyroid Function

9:46 Hypothyroidism Explained

16:20 Hyperthyroidism Overview

19:54 Testing and Blood Work Insights

21:25 Interpreting Thyroid Panels

29:02 Autoimmunity and Thyroid Health

30:36 Role of T4 and T3

35:30 Conversion and Metabolism

41:28 Addressing Autoimmune Factors

48:54 Nutritional Support for Thyroid Health

52:30 Retesting and Monitoring Thyroid Levels

56:11 Conclusion and Next Steps

Learn more: taliand.com

Sign up for the full free Bloodwork Course at goodmood.thrivecart.com/decode-your-bloodwork/

In this lecture, Dr. Talia Marcheggiani, naturopathic doctor and registered psychotherapist, emphasizes the critical role of insulin testing in assessing metabolic health, arguing that it offers more insight than glucose readings alone.

As part of a series on blood work interpretation, she highlights the complex relationship between insulin levels and various health issues, including fatigue, weight gain, and hormonal imbalances, which often go unnoticed in patients with normal glucose levels.

Dr. Talia critiques the tendency in conventional medicine to overlook insulin testing and discusses its implications for conditions such as obesity, cognitive function, and reproductive health.

She introduces the Homeostatic Model Assessment of Insulin Resistance (HOMA-IR) as a tool for evaluating insulin resistance and shares practical strategies to lower insulin levels through lifestyle modifications.

The lecture calls for greater awareness of and advocacy for insulin testing to empower individuals to manage their metabolic health.

taliand.com

goodmood.thrivecart.com

In this episode of the Good Mood Podcast, I, Dr. Talia Marcheggiani, ND, RP, examine the critical link between iron levels and health issues such as anxiety, depression, and muscle pain.

As a naturopathic doctor and psychotherapist, I emphasize that low iron can profoundly affect both mental and physical well-being. I encourage listeners to check their iron and ferritin levels if they experience symptoms like fatigue and mood changes.

I break down the science behind iron's role in energy production and cognitive function, highlighting its impact on mood regulation. Practical advice on iron supplementation, dietary considerations, and monitoring ferritin levels is also provided.

My goal is to inspire a holistic perspective on health and urge listeners to proactively engage with their healthcare providers to improve health outcomes.

taliand.com

goodmood. thrivecart.com

This episode clarifies cholesterol complexities, debunking myths about high levels. A naturopathic doctor discusses lipid measures, challenges the "bad" cholesterol narrative, and shares heart health tips to empower patient-provider conversations.

In this episode, Dr. Talia Marcheggiani, ND, RP clarifies the complexities of cholesterol and the misconceptions surrounding high cholesterol levels. As a naturopathic doctor and psychotherapist, I explain the significance of various lipid measurements such as total cholesterol, HDL, and LDL, and their implications for cardiovascular health.

I challenge the notion of cholesterol as solely "bad," emphasizing its essential role in our bodies.Listeners will learn about lifestyle changes for heart health, the potential benefits of advanced testing like ApoB, and the importance of personalized health management.

This podcast aims to empower patients by providing the knowledge needed to engage effectively with healthcare providers about their cholesterol health.

Learn more about Rhythm & Flow: The Integrative Hormone Mastery Course here: https://goodmood.thrivecart.com/rhythm-and-flow/

In this episode, I reconnect with couples therapist Melissa Johari, MSW, RSW, to discuss the power of healthy relationships and the Gottman Method. We explore how nurturing connections enhance individual well-being and family dynamics, and she shares insights from her recent couples retreat focused on communication and conflict resolution. Listeners will gain practical tools, including Melissa's ILEAAD communication framework, to strengthen their partnerships and navigate challenging conversations with empathy.

Connect with Melissa at: https://thecouplewellnessexperts.com/https://www.instagram.com/couplewellness/