How High Prolactin Affects Your Health and Hormones

by Deborah Maragopoulos FNP | May 18, 2023 | Hypothalamus | 0 comments

Did you know high prolactin affects your health and hormones? Let’s talk about it.

Prolactin is one of the most underappreciated hormones. I rarely see clinicians checking prolactin levels unless they suspect a patient has a pituitary tumor. It’s a shame because high daytime prolactin can be at the root of so many issues. 

Prolactin is produced by the hypothalamus and stored in the pituitary gland.

Prolactin is a nocturnal hormone – meaning that it’s produced at the highest levels at night and lowest levels during the day. To determine the proper circadian rhythm, I check prolactin around 9:00 AM in the morning. 

Elevated morning prolactin indicates poor sleep. Moreover, not getting up with the sun, nipple stimulation within 24 hours of drawing prolactin, autoimmunity, obesity, hypothalamic dopamine deficiency, and sometimes prolactin-secreting tumors. 

At night, prolactin is released to help your immune system do its job better. It tells your thymus to program WBCs properly and then release them as T cells. T cells attack invading microbes and cancer cells. 

If prolactin is high during the day, your immune system does not function properly.

T cells attack normal tissue – which is known as autoimmunity. You may not have classic autoimmunity, like rheumatoid arthritis, lupus, or thyroiditis, but you have autoimmune tendencies. You get rashes easily, you may have leaky gut syndrome, or you will have trouble losing weight. The majority of my morbidly obese patients have discircadian prolactin levels. 

Women with serum prolactin greater than 100 ng/dl will have overt hypogonadism which looks like menopausal symptoms – amenorrhea, hot flashes, and vaginal dryness. Serum prolactin between 50 to 100 ng/dl may cause infrequent periods. Serum prolactin between 20 to 50 ng/dl may shorten the luteal phase contributing to infertility and early miscarriage.

In men, serum prolactin greater than 50 ng/dl causes hypogonadotropic hypogonadism leading to low testosterone production. As well as low libido, impotence, infertility, gynecomastia, erectile dysfunction, loss of muscle mass, increase body fat, and low bone mass.

Optimizing your hypothalamus with Genesis Gold® helps to return prolactin to healthy circadian levels. 

If you want to learn more about prolactin and how it affects your health and hormones, please join our free Hormone Reboot Training.

 

Excerpt from Hypothalamus Handbook

The role of prolactin in central nervous system inflammation; Edgar Ramos-Martinez, Ivan Ramos-Martínez , Gladys Molina-Salinas , Wendy A. Zepeda-Ruiz and Marco Cerbon; Reviews in the Neurosciences; 2021

Frequently Asked Questions:

Can your hypothalamus cause weight gain?

Yes. The hypothalamus is the master regulator of metabolism, controlling how your body stores and burns energy through its signaling to the thyroid, adrenals, and pancreas. When the hypothalamus becomes dysregulated by chronic stress, poor sleep, inflammation, or blood sugar instability, it defends a higher weight "set point" — causing the body to hold onto fat regardless of diet or exercise. This makes hypothalamic dysfunction an upstream root cause of stubborn weight gain.


What is a weight set point and why won't mine move?

A weight set point is the body weight your hypothalamus works to defend, calibrated over time by stress, sleep, hormones, and inflammation. When you diet, the hypothalamus perceives scarcity and responds by slowing metabolism, increasing hunger hormones, and suppressing satiety signals to return you to that set point. This is why most people regain lost weight within two to five years of conventional dieting — the set point itself was never recalibrated, only temporarily overridden.


Why do I gain weight under stress even when I'm not eating more?

Chronic stress raises cortisol, which disrupts blood sugar regulation, promotes abdominal fat storage, and signals the hypothalamus that the body is under threat. In survival mode, the hypothalamus defends fat stores and slows metabolism — so weight can increase even without any change in calorie intake. The stress chemistry, not the food, is driving the weight gain, which is why stress reduction is essential to any lasting metabolic reset.


Why do I regain weight after stopping GLP-1 medications?

GLP-1 medications work peripherally on appetite and gastric signaling, but they do not address the underlying hypothalamic dysregulation that sets your defended weight. Because the hypothalamic set point is never recalibrated, the body resumes defending its original weight once the medication stops — leading to significant regain. Long-term success requires restoring hypothalamic regulation so the set point itself lowers, rather than relying on appetite suppression alone.


How long does it take to reset your metabolism?

Genuine metabolic recalibration takes a minimum of 90 days, because the hypothalamus needs consistent signals of safety and sufficiency before it will lower its defended set point. This differs from a diet, which produces temporary suppression the body quickly corrects. A 90-day reset typically moves through three phases: stabilizing stress chemistry (days 1–30), rebuilding metabolic efficiency (days 31–60), and lowering the weight set point (days 61–90).


Why does my thyroid feel slow even though my labs are "normal"?

Under chronic stress, the body converts thyroid hormone into reverse T3, which blocks active thyroid receptors and slows metabolism at the cellular level — even when standard lab values appear normal. This means you can experience genuine symptoms of slow metabolism, such as fatigue, cold intolerance, and brain fog, while your thyroid panel looks unremarkable. Addressing the upstream hypothalamic and stress signaling often improves thyroid conversion and symptoms.


Is stubborn weight gain a willpower problem?

No. Stubborn weight gain is a signaling problem, not a willpower problem. The hypothalamus governs weight through survival mechanisms that operate below conscious control — defending its set point by slowing metabolism and increasing hunger when it perceives threat. No amount of discipline can override this system; lasting change comes from restoring hypothalamic regulation through reduced stress, balanced blood sugar, restorative sleep, and targeted nutritional support.

About the Author - Deborah Maragopoulos FNP

Known as the Hormone Queen®️, I’ve made it my mission to help everyone - no matter their age - balance their hormones, and live the energy and joy their DNA and true destiny desires. See more about me my story here...

     

Last Updated: August 16, 2023

0 Comments

Submit a Comment

Your email address will not be published. Required fields are marked *