Hormones 101: Understanding Estrogen, Progesterone, and More

Hormones 101: Understanding Estrogen, Progesterone, and More

Published: 10:16AM 15 May 2023

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Jayti Shah

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Hormones are the body's chemical messengers, instrumental in regulating various physiological processes. They affect everything from mood to metabolism, growth, reproduction, and much more. This blog post will delve into some of the most crucial hormones in the human body, focusing primarily on estrogen and progesterone, as well as their functions and impacts on health.

Hormones: The Essential Regulators

1. Estrogen

Estrogen, primarily a female sex hormone produced by the ovaries, plays a vital role in the reproductive system and secondary sexual characteristics. However, its influence goes beyond reproduction.


  • Reproductive Health: Estrogen regulates the menstrual cycle and prepares the uterus for pregnancy by thickening its lining.
  • Bone Health: It helps maintain bone strength by working with calcium, vitamin D, and other hormones to effectively break down and rebuild bones according to the body's natural processes.
  • Cardiovascular Health: Estrogen has a protective effect on the heart, helping maintain the flexibility of blood vessels.


Estrogen imbalances can lead to various health issues:

  • High estrogen levels can cause symptoms such as bloating, irregular menstrual periods, and decreased sex drive. Long-term, it may lead to conditions like ovarian cysts or breast cancer.
  • Low estrogen levels can cause missed periods, mood swings, and hot flashes. Over time, low levels can lead to osteoporosis.

2. Progesterone

Progesterone, another crucial hormone produced by the ovaries, plays a vital role in the menstrual cycle and maintaining pregnancy.


  • Reproductive Health: Progesterone prepares the endometrium for the potential of pregnancy after ovulation. It triggers the lining to thicken to accept a fertilized egg.
  • Pregnancy: It also prevents the muscles of the uterus from contracting, which could cause rejection of the developing embryo.


Just like estrogen, imbalances in progesterone levels can lead to health issues:

  • High progesterone levels may cause symptoms like fatigue, mood changes, and bloating.
  • Low progesterone levels can lead to irregular or heavy periods, and issues with maintaining a pregnancy.

3. Other Key Hormones

While estrogen and progesterone play pivotal roles, especially in female physiology, other hormones are also critical to overall health:

  • Insulin regulates the body's glucose or sugar levels, critical for energy production.
  • Thyroid hormones, including T3 and T4, regulate metabolism, body temperature, and heart rate.
  • Cortisol, often called the "stress hormone," helps control the body's response to stress.


Hormones are crucial for maintaining homeostasis in the body. While estrogen and progesterone are key players in women's health, all hormones work in a synchronized manner to ensure the smooth functioning of body processes. Understanding these hormones and their impact on health can help us make more informed decisions about our health and wellness.

Jayti Shah is a Clinical Nutritionist with a master's degree in Clinical Nutrition and Dietetics. She is a member of the Indian Dietetic Association (IDA). Over the last 9 years, she has helped 400 clients in their clinical and weight loss journeys. She works with SocialBoat as a nutrition consultant.

At SocialBoat, we offer custom diet plans and guided workouts to help you achieve your goals in a 360-degree approach. Our gamified experience ensures that you don’t find workouts boring and we reward you for being consistent with your efforts.

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  11. Mayo Clinic. (2019). Chronic stress puts your health at risk. https://www.mayoclinic.org/healthy-lifestyle/stress-management/in-depth/stress/art-20046037

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