Most of us associate testosterone with muscles, aggression, and sexual desire.
It conjures up images of the prototypical “alpha male.”
But there’s another side to this hormone, a softer side, deeply tied to our health and longevity.
Testosterone is actually your heart’s healthy hormone.
When we think of “muscles” and testosterone, most people think of bulging biceps and tight pecs. And it’s true.
Testosterone definitely increases muscle tone.
But let’s consider the heart.
Your heart is the most active muscle in your whole body.
It beats over 100,000 times every single day, pumping more than 2,000 gallons of blood through 60,000 miles of blood vessels. 
Can you imagine doing 100,000 bicep curls every day? How would your arm feel after?
And yet your heart does this day in and day out, without any conscious effort, complaint, or soreness.
How is this possible?
Even though we all know the heart is a muscle, it’s surprising to learn that it has the highest concentration of testosterone receptors of any organ in the entire body.
In fact, it has over 500% MORE testosterone receptors than the prostate gland .
Biologically speaking, receptor density reflects how important a compound is to a given tissue.
So let’s read that again: testosterone is more important to the heart than the largest sex gland in the male body.
In short: testosterone is essential to heart health.
In fact, in one study, mice without T receptors developed mis-formed and dysfunctional hearts, covered in cardiac fibrosis.
As men age, they can lose their sexual potency. Of course, the symptoms of this problem can be “hacked” with drugs like Viagra, but the reasonfor this loss of sexual potency is connected to declining T levels.
Because testosterone dilates blood vessels and enhances blood flow in the whole body, not just in the sex organs.
Better blood flow does mean more potency, but it ALSO means less cardiovascular disease.
And, as you might expect, symptoms of T deficiency include a full range of other blood flow issues [3,8], including:
And every one of these symptoms increases with age as one's T levels continue to decline.
Because of all of these connections between testosterone, the heart, and blood flow, many researchers investigated T-therapy to treat cardiovascular disease.
One study found T therapy lowered cardiovascular disease by 33%! .
In one of the largest, most extensive studies, medical researchers showed that T therapy reduced risk of ALL major cardiovascular events .
That includes strokes, heart attacks, and even death.
Now, there are three points for you to consider about this study:
Raising their testosterone improved the condition of men who already had cardiovascular issues.
So if testosterone was the solution here, why was it low in the first place? And what can you do about it to keep your heart healthy?
Average testosterone levels go down every single year.
Not so coincidentally, sperm counts also go down every single year. So does sperm health. Just look at this chart of sperm morphology (a measure of sperm health) over the last 50 years :
The average man today has at least 20% less testosterone than a man 30 years ago. And the further back you look, the more disturbing the trend.
What’s going on?
Our environment is full of compounds that act as “endocrine disrupters” –– they mess up your hormones. This is especially the case with testosterone. Many plastics, pesticides, and food additives are estrogenic, meaning they increase estrogen.
Toxins finding their way into our food, water, and environment are shifting our delicate hormonal balance.
And as we learned, this isn’t just about fertility or sexual health, this affects your whole system –– especially your heart.
It’s tempting to think that depleted testosterone is only an issue for men, but women’s hearts depend on testosterone just the same.
Hormones function as a dynamic balance of many different factors. Too much estrogen and too little testosterone can be just as harmful to a woman’s cardiovascular system.
This is by no means an endorsement to go out and get testosterone replacement therapy. Such drastic measures should only be considered as a last resort after consulting with a qualified doctor.
Fortunately, there are many things you can do to raise your testosterone levels naturally.
Here are some simple changes you can make to raise your testosterone levels to improve your heart health and overall well-being:
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So, we’re going to dig into a big one: macros – aka macronutrients.
Now you’ve probably heard about macronutrients, especially in relation to a paleo or ketogenic diet.
So, what’s the big deal? What’s actually important? What’s fluff? And what’s worth paying attention to?