When we talk about hormones in midlife, women often hear about estrogen while men hear one thing – Testosterone.
- Low energy? Check testosterone.
- Less muscle? Must be low T.
- Weight around the middle? Testosterone.
- Lower sex drive? Definitely testosterone.
The human body is rarely that simple. Just as estrogen does not operate alone in women, testosterone does not operate alone in men. Testosterone interacts with estrogen, insulin, thyroid hormones, stress physiology, sleep, body composition, nutrition and physical activity. That means a testosterone is only one piece of the puzzle. And sometimes the better question is: “What has changed in the body that might be affecting testosterone in the first place?”
Why Can Testosterone Fall as Men Age?
Testosterone can decline with aging, but age is only part of the story. Sleep, body composition (muscle mass and visceral fat), medications, chronic illness, nutrition and metabolic health can all influence the picture. Symptoms commonly attributed to testosterone include:
- fatigue,
- lower libido,
- changes in mood, and
- decreased physical performance and health.
That’s why current endocrine guidance recommends diagnosing hypogonadism only when a man has both compatible symptoms and consistently low testosterone concentrations. A low result should generally be confirmed with another early-morning fasting measurement. This encourages treatment of the person and not just the number.
A man who feels exhausted, sleeps five hours a night, has untreated sleep apnea, has gained fat in the mid-section (assumed to be visceral fat), drinks alcohol and has insulin resistance needs a different conversation than someone with true testicular or pituitary disease. The lab value may look similar. The physiology behind it may not be.
The Testosterone–Estrogen Connection
Men need estrogen. Men convert some testosterone into estradiol through an enzyme called aromatase. Aromatase converts androgens into estrogens. And that conversion isn’t a mistake. It helps to foster a healthy hormonal environment within a healthy body. Fat tissue isn’t simply stored energy. It is metabolically active tissue, and aromatase activity occurs in fat. This doesn’t mean that every man carrying extra weight has “estrogen dominance.” It does mean that body composition and metabolic health belong in a hormone conversation.
Start With the Metabolic Foundation
This is where functional and integrative nutrition can be incredibly useful without abandoning evidence-based medicine. If a man has increasing abdominal fat, rising glucose or insulin, poor sleep, declining muscle mass and low testosterone, these aren’t necessarily five separate problems. They may be interconnected. We can begin to assess the cause via fasting insulin. Insulin can rise before fasting glucose becomes abnormal, and it specifically identifies visceral adiposity, excess refined carbohydrate intake and metabolic syndrome among patterns associated with higher fasting insulin.
Top notch strategies to restore and support metabolism are as follows:
1. Build and Protect Muscle
Muscle becomes increasingly valuable with age. Resistance training helps preserve lean mass, physical function and metabolic health. For men concerned about testosterone, body composition or insulin resistance, strength training is the treatment. Progressive resistance training several times each week alongside intentional aerobic exercise and daily mindful movement is necessary.
2. Make Protein a Priority
Muscle requires protein for growth and maintenance. High-quality protein across the day preserves this metabolically active tissue that helps the entire system function better. Aiming for 20-30 grams of protein (think 3-6oz of chicken or fish or 1 cup of beans or lentils) at each meal will provide the necessary ingredients for muscle health.
3. Feed Metabolic Health
A Mediterranean-style eating pattern gives us an excellent foundation: vegetables, fruits, legumes, nuts and seeds, whole grains, fish and seafood, lean proteins, extra-virgin olive oil and other minimally processed foods. But, one size doesn’t fit all. We have to individualize the pattern to the person. We can do that by boiling this dietary lifestyle down to the biological basics. These include:
- Plant-based eating. Build meals where half the plate is non-starchy vegetables. These vegetables will provide the abundance antioxidants for metabolic health, fiber for digestive health and satiety.
- Choose healthy fats. Fat sources that are rich in Omega-3s will transform the bodies ability to combat inflammation from the system to cellular level. Intentional additions of 1Tbsp pure Olive Oil, ¼ Cup Almonds or Walnuts, 3oz of Fresh Salmon will provide the body with this nutrient.
- Prioritize lean protein. Choose lean or protein sources that are low in unhealthful saturated fats such as grass-fed beef or bison, skinless chicken or turkey, fish, or beans and lentils.
- Garnish with carbohydrates. Consistent carbohydrates are key to managing nutritional fatigue and insulin resistance. Aim for a serving (1/2 cup) of whole grains or starchy vegetables at each meal.
4. Don’t Ignore Sleep
This may be one of the most underrated pieces of men’s hormone health. A man complaining of low energy, poor recovery and low testosterone deserves questions about sleep duration, sleep quality and sleep apnea, not just another hormone panel.
What About Alcohol?
Alcohol deserves a place in this conversation too. Not because everyone needs to stop drinking completely, but because alcohol can affect sleep, energy intake, liver health, body composition and hormonal physiology. If someone has elevated estradiol, visceral fat, poor sleep, fatty liver or metabolic dysfunction, alcohol intake is one of the modifiable variables worth examining. A short alcohol-free period can sometimes be a useful experiment:
How do sleep, energy, appetite, training recovery and metabolic markers respond?
That gives us information not judgment.
And What About Gut Health?
Remember from the former article on Estrogen and Energy that estrogens undergo metabolism and elimination through the liver and gastrointestinal tract. These biochemical pathways aren’t exclusive to women. So supporting regular bowel movements, adequate dietary fiber, plant diversity and overall gut health makes sense as part of whole-person care. Cruciferous vegetables (broccoli, cauliflower, cabbage, kale and Brussels sprouts) have plant-based compounds involved in pathways that support healthy estrogen metabolism.
Do Men With High Estrogen Need DIM?
DIM, I3C, calcium-D-glucarate, sulforaphane and other compounds are frequently marketed as “estrogen detox” supplements. There is interesting biology here. For example, sulforaphane from cruciferous vegetables and broccoli sprouts support estrogen’s Phase II metabolism. But interesting mechanism does not automatically equal proven clinical treatment. I would much rather start with food and fiber first to restore gut health and routine bowel movements which is a foundational gateway to metabolic health.
What Should We Actually Test?
When symptoms suggest testosterone deficiency, a thoughtful evaluation might begin with morning fasting total testosterone and fasting insulin. If it is low, repeat it. Depending on the situation, clinicians may also evaluate free testosterone and SHBG (sex hormone binding globulin). Once true androgen deficiency is established, LH and FSH help distinguish primary testicular hypogonadism from secondary pituitary/hypothalamic hypogonadism. Additional testing may include prolactin and other targeted evaluation based on the clinical picture.
Then zoom back out. This is where a lab panel becomes a story rather than a collection of numbers.
Where Does Testosterone Replacement Therapy Fit?
Lifestyle isn’t a substitute for appropriate medical treatment. Men with true, symptomatic hypogonadism may benefit from testosterone replacement therapy after appropriate evaluation and shared decision-making. But testosterone isn’t an anti-aging vitamin.
The Endocrine Society does not recommend routinely prescribing testosterone to all men over 65 simply because testosterone is low. For an older man with symptoms and repeatedly, unequivocally low morning testosterone, treatment can be considered individually after discussing benefits and risks. And TRT requires monitoring.
The Bigger Men’s Health Conversation
Maybe the most important thing testosterone can do is get men into a conversation about their health. The male patient who shares that they think their testosterone is low may actually be saying…
- I’m exhausted.
- I don’t feel as strong as I used to.
- My sex drive has changed.
- I’ve gained weight around my middle.
- I’m not sleeping.
- I’m stressed.
- I don’t feel like myself.
Those concerns deserve more than a testosterone prescription and more than being dismissed as normal aging. They deserve curiosity.
The goal isn’t to make a 60-year-old body behave like a 20-year-old body. The goal is to understand what the body is telling us and give it the resources it needs to function well in the chapter it’s in.
Sources (3)
The clinical guidance above draws on the Endocrine Society’s testosterone guideline and its updated 2026 statement on testosterone replacement therapy, along with peer-reviewed reviews of estradiol’s physiological roles in men. (PubMed)
