Most men only think about testosterone. But estrogen is working in the background too, and if the two get out of balance, you’ll feel it before you understand why.
Ask any man what hormone matters most for his health, and he’ll probably say testosterone. It’s the one we talk about at the gym, in supplement ads, and in every “boost your T” headline online. But there’s a second hormone working right alongside it that almost nobody mentions: estrogen.
Yes, estrogen. The hormone most people associate with women is also active in men’s bodies every single day, and it plays a bigger role in how you feel and function than most guys realize. The truth is, testosterone and estrogen aren’t rivals. They’re partners. And when that partnership gets out of balance, in either direction, your body notices.
Wait, Men Have Estrogen Too?
Yes. Every man produces estrogen, and he needs it. A small part of the testosterone circulating in your body naturally converts into estradiol, which is the main form of estrogen. This isn’t a mistake or a sign that something’s wrong. It’s how the system is designed to work.
Estrogen in men helps protect bone strength, support heart health, regulate mood, manage fat storage, and maintain sex drive. These are systems that testosterone also affects, which is why the two hormones are so closely linked. Think of testosterone as the engine and estrogen as part of the control system that keeps that engine running smoothly instead of overheating.
What Happens When Testosterone Runs Low
As men get older, testosterone naturally starts to decline. It’s a slow drift, not a cliff, but the numbers add up. Roughly 1 in 5 men over age 60 has low testosterone, and that number climbs to more than half of men once they pass 80. That decline has been linked to a higher risk of heart disease and a general drop in physical and emotional well-being.
Here’s the part most people miss: since your body makes estrogen out of testosterone, low testosterone often means low estrogen too. So a lot of the symptoms men blame entirely on “low T” — low energy, low libido, mood changes, weight gain — may actually be a combined hormone problem, not just a testosterone problem.
What Happens When Estrogen Runs High
The opposite problem is just as common, especially in men carrying extra body fat. Fat tissue doesn’t just sit there. It actually produces estrogen. So the more excess body fat a man carries, the more estrogen his body tends to make, which can push his testosterone-to-estrogen ratio out of balance.
Research has connected higher estrogen levels in men to a greater risk of chronic illness. And in men with existing heart conditions, both extremes matter: men with either very high or very low estradiol levels had a higher risk of death, while the men whose levels landed right in the middle had the best survival outcomes. That’s a pretty clear signal that “balance” isn’t just a wellness buzzword. It’s measurable, and it matters.
It’s not “more testosterone is always better.” It’s about keeping both hormones in a healthy range relative to each other.
Signs Your Hormones Might Be Out of Sync
Because testosterone and estrogen affect a lot of the same systems, an imbalance in either direction can show up looking almost identical. Common signs include:
- Low energy or feeling tired even after a full night’s sleep
- Unexplained weight gain, especially around the midsection
- Lower sex drive or performance issues
- Mood swings, irritability, or flat emotions
- Loss of muscle mass despite regular training
If several of these sound familiar, it doesn’t automatically mean your hormones are the cause. But it’s a good enough reason to get actual bloodwork done rather than guessing or self-treating based on a supplement ad.
What Actually Moves the Needle
1. Manage Body Fat
Since fat cells are one of the main sources of extra estrogen production in men, losing excess body fat is one of the most direct ways to bring estrogen back down and let testosterone do its job. This doesn’t require extreme dieting — consistent movement and a modest calorie deficit go a long way over time.
2. Take Liver Health Seriously
Your liver is responsible for clearing out excess estrogen from your system, so keeping it functioning well is an underrated piece of hormone balance as you age. That means moderating alcohol, staying hydrated, and eating a diet with enough fiber and vegetables to support natural detoxification.
3. Don’t Chase Testosterone Numbers Alone
If you’re considering testosterone replacement therapy, understand that adding testosterone without medical supervision can sometimes backfire. Extra testosterone introduced into the body can convert into extra estradiol, especially without proper monitoring, which can push estrogen levels too high instead of fixing the problem. Any hormone therapy should come with regular bloodwork, not guesswork.
4. Watch the Basics That Quietly Shift Hormones
Chronic stress, poor sleep, and heavy alcohol use all nudge your hormone balance in the wrong direction over time. None of these are dramatic on their own, but stacked together over months and years, they add up to a real, measurable shift.
The Bottom Line
Testosterone gets all the attention, but it doesn’t work alone. Estrogen is quietly supporting your bones, heart, mood, and metabolism right alongside it. The goal isn’t to maximize one hormone and ignore the other — it’s keeping both in a healthy range together. If something feels off, the smartest first step isn’t a supplement bottle. It’s a blood test and a conversation with your doctor.
Sources
- Designs for Health, “The Testosterone/Estrogen Balance in Men”
- DUTCH Test, “Men’s Health: The Relationship Between Estrogen and Testosterone”
- TCT Medical, “The Critical Balance: Men’s Estrogen and Testosterone Levels”