Why is my libido so low?

This overlooked hormone can dampen desire


Hey, Matt Cook here, and I’ve uncovered a hidden culprit that might be sabotaging men’s sex drive…

You might be thinking… low testosterone – well, not really.

Because there’s another powerful hormone that could be the real deal when it comes to libido.

So, keeping this hormone’s levels up… also keeps the libido super high.

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Why is my libido so low?

When men have problems with their sex drive, they immediately think it may be due to low testosterone.

This may be true, though other hormones like prolactin and estrogen play a large role too.

But hormones do not exist in a vacuum – all hormones affect other hormones…

…and perhaps the most powerful hormone in the body is thyroid hormone.

Numerous studies have shown that problems with thyroid hormone levels can affect testosterone and other important hormones.

Thyroid problems can cause sexual problems even though they may not knock testosterone out of the normal lab range.

If you are suffering with any sort of health problem at all, it is not a bad idea to get a full thyroid hormone lab.

If your thyroid is out of whack this could be the root of your problems.

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The human research was carried out at Hospital Universitario de Los Andes, Mérida in Venezuela. The paper was published in the Archives of Andrology.

The authors of this study wanted to learn more about the role of thyroid problems in the interactions between the pituitary gland and the testicles.

The pituitary gland produces a number of substances which end up dictating how much testosterone and sperm are produced in the testes.

These substances can also affect libido in complex ways, even when testosterone levels are normal.

“This investigation was conducted to evaluate the effect of thyroid dysfunction on the pituitary-gonadal axis.”

Some of the men had Graves’ disease which causes clinical elevation of thyroid hormones.

Other men had clinically low levels of thyroid hormones.

And the rest of the men had normal thyroid function for comparison.

“10 men with Graves’ disease and 5 hypothyroid patients were studied; 10 normal males were studied as a control group.”

The researchers found that men with high levels of thyroid hormone had problems with the communication between the pituitary and the testicles.

The pituitary produces something called hCG – which affects the testicles…

…but the response to hCG was abnormal in people with Graves’ disease.

“In untreated conditions hyperthyroidism was associated with a normal serum-free testosterone concentration and a reduced testosterone response to hCG stimulation.”

The researchers found that these men also had an increased response to gonadotropin-releasing hormone…

….another hormone produced in the pituitary which affects the testicles.

“Untreated hyperthyroidism was also associated with a hyper response of luteinizing hormone to gonadotropin-releasing hormone.”

When thyroid hormone (FT4) levels were brought down to the normal range the abnormalities in the pituitary gland…

…testicular signaling cascade returned to normal.

“These abnormalities reverted after normalization of high FT4 serum levels.”

The researchers also found abnormalities in men with low thyroid hormone levels.

They had a decreased luteinising hormone response to gonadotropin-releasing hormone.

“Hypothyroid men showed a normal response to hCG, but the luteinizing hormone response to gonadotropin-releasing hormone was reduced.”

Further analysis showed that this relationship seemed to be tied to thyroid hormone levels (FT4).

“There was a strong and significant negative correlation between FT4 and testosterone response and a positive correlation with luteinizing hormone response to gonadotropin releasing hormone.”

All men had normal testosterone – yet 65% of those with thyroid problems complained of problems with libido.

Even though testosterone was not pushed out of the normal range…

…there were significant changes to the functioning of the hormonal gland signaling in all these men.

“Despite normal testosterone concentrations, 70% of hyperthyroid and 60% of hypothyroid patients had complaints of decreased libido.”

Thyroid abnormalities can have profound effects on how you feel – even when they do not alter other hormones.

Thyroid is one of the most important hormones of the body, affecting everything else in complex ways.

“We found a hyper response to luteinizing hormone in hyperthyroidism and a defective luteinizing hormone response to gonadotropin-releasing hormone in hypothyroidism.”

If you are not feeling 100%, then checking out your thyroid function is one of the first things you should do.

This research reveals something crucial about male health that most doctors overlook.

While we often blame testosterone for libido issues, the real culprit might be hiding in plain sight: your thyroid.

Think about it.

Even with normal testosterone levels, 65% of men with thyroid problems reported decreased libido.

That’s not a coincidence.

I’ve seen this firsthand.

For years, I struggled with low energy and a non-existent drive, despite “high” testosterone levels.

It wasn’t until I addressed my thyroid function that things turned around.

That’s why I’ve created the Thyroid coaching…

In this program, we delve deep into the often-ignored hormonal connections that can make or break your manhood.

We’re exploring:

  • How thyroid function impacts your entire hormonal cascade
  • Simple tests to uncover hidden thyroid issues
  • Natural methods to optimize your thyroid and reignite your libido

If you’re ready to get your vitality back and enjoy a fulfilling intimate life again, join me here.


Matt Cook is editor-in-chief of Daily Medical Discoveries. Matt has been a full time health researcher for 26 years. ABC News interviewed Matt on sexual health issues not long ago. Matt is widely quoted on over 1,000,000 websites. He has over 300,000 daily newsletter readers. Daily Medical Discoveries finds hidden, buried or ignored medical studies through the lens of 100 years of proven science. Matt heads up the editorial team of scientists and health researchers. Each discovery is based upon primary studies from peer reviewed science sources following the Daily Medical Discoveries 7 Step Process to ensure accuracy.
Effects of thyroid status on pituitary gonadotropin and testicular reserve in menhttps://pubmed.ncbi.nlm.nih.gov/9017126/