Testosterone, explained

You lose 1% a year. The lab still calls it normal.

Testosterone falls 1 percent a year after 30. The reference range falls with it, so the bloodwork comes back fine.

Updated August 13, 2026 · 9 minute read

One percent is not a number that gets anyone's attention. It is smaller than the gap between two nights of sleep, smaller than the swing between a Monday morning draw and a Friday afternoon one, small enough that no single year ever feels like the year something changed. That is exactly what makes it work. No man loses his testosterone in one bad year. He loses it across thirty good ones.

Maximus states the figure plainly in its own guide. Testosterone peaks in the late teens to early twenties, then declines "roughly 1% per year after age 30." The company then runs the arithmetic forward, which almost nobody does for themselves:

Starting around age 30, testosterone drops about 1% annually. Do the math: by age 50, you're potentially down 20% from your peak. By 70, it could be 40% or more. Maximus, Testosterone Levels By Age

Twenty percent is not a rounding error. It is the difference between a man who trains four times a week because he wants to and a man who trains twice because he ought to. And the reason it goes unnoticed for two decades is not that men are inattentive. It is that the one instrument built to catch it has been quietly calibrated to miss.

The arithmetic

Down 40 percent, in range the entire time

The Maximus guide works a single man forward through four decades. He is not a patient with a disease. He is the median case:

Worked example published by Maximus: "a 25-year-old with testosterone at 750 ng/dL might measure 600 ng/dL at 45 and 450 ng/dL at 65." Their conclusion: "he's lost 40% of his testosterone over four decades."

Three blood draws. Three clean results. One man who has surrendered 40 percent of the hormone that governs how much muscle he holds, how well he sleeps, how quickly he recovers and how much he wants anything. In the words of the company's own guide, "He's technically still 'in range' at all three ages."

Nothing on those lab reports was wrong. The reports answered the question they were asked. The question was never the right one.

The instrument

Why the blood test keeps saying you are fine

Here is the table of reference ranges Maximus publishes, the same kind of table your own lab prints on the back of your results.

Reference ranges for total testosterone in men, as published by Maximus in its guide to testosterone levels by age. Lab reference ranges vary by testing method and facility.

Age	"Normal"	Optimal
20 to 29	400 to 950	600 to 900
30 to 39	350 to 900	550 to 850
40 to 49	300 to 850	500 to 800
50 to 59	250 to 800	450 to 750
60 and over	200 to 750	400 to 700

Read the first column downward. The floor of normal falls from 400 to 200 across those five rows. Now read the chart at the top of this page again. Between his twenties and his fifties the average man gives up about 70 ng/dL. Over the same span the floor beneath him gives up 150. He is sinking. The floor is sinking faster. He is more comfortably "normal" at 50 than he was at 20, holding less testosterone.

Maximus does not hide this. From the same section of that guide:

Notice those ranges are wide. A 45-year-old at 320 ng/dL is technically "normal," but he's at the bottom of the range. [...] Being in range isn't the same as feeling good. Maximus, Testosterone Levels By Age

There is a second way the number lies, and it is worth thirty seconds. Total testosterone counts everything in the blood, including the portion bound to proteins and unavailable to you. What your body can actually use is free testosterone, which Maximus says "should typically be above 9 ng/dL." Their guide is direct about the mismatch: "If your total is 600 ng/dL but your free testosterone is only 6 ng/dL, that explains why you don't feel as good as the numbers suggest you should." Most standard panels never measure it.

The symptoms

What fifteen years of one percent feels like from the inside

Slow losses do not announce themselves as losses. They arrive as opinions you form about yourself. You are not as disciplined as you were. You do not bounce back the way you used to. You have less patience than you would like. Here is the list Maximus publishes, word for word, of what low testosterone actually feels like:

• Tired even after a full night's sleep
• Weight that settles around the middle and will not move
• Sex drive or performance is not what it was
• Foggy thinking, harder to hold focus
• Shorter fuse, flatter mood
• Workouts take longer to recover from

Not one of those items sends a man to a doctor on its own. Together they are simply what people call getting older. The company's own explainer sketches the moment it usually becomes undeniable: "a 47-year-old who used to love playing weekend basketball now dreads it because recovery takes days instead of hours." He has not lost his taste for the game. He has lost the endocrine budget that made the game cheap.

One line from the Maximus review page on Trustpilot says the thing better than any brochure. A member four months into a protocol, describing his starting point in his doctor's language:

Me being low normal at the start was not good, and where I am at now is healthy in all aspects. John Golat, verified review, April 22, 2026, on Trustpilot

Quotation condensed from the published review. "Low normal" is not a diagnosis. That is the entire problem with it.

Before anything else

The part their own guide tells you to fix first

This is where a page selling a prescription would usually stop being honest. Maximus does not, so neither will this one. Age is only one of the inputs, and it is the one input you cannot negotiate with. The others move, and the company publishes how far they move:

Every figure above is published by Maximus in its guide to testosterone levels by age, in the sections on lifestyle factors and lifestyle optimization. The guide labels them "try this first."

Add those together and the conclusion writes itself, which is why Maximus writes it: "A 50-year-old who sleeps well, stays lean, manages stress, and exercises regularly can have higher testosterone than an unhealthy 30-year-old." A man who has never seriously tried sleep, strength and body composition has not yet earned the right to be disappointed by his bloodwork.

And for a large share of men, they are not enough. You can do all six and still be a 48-year-old sitting at the bottom of a range that was drawn wide enough to include you. That is the point at which the question stops being lifestyle and starts being medicine.

The catch

The trap hidden inside the obvious fix

The obvious fix is to put the missing hormone back. It works. It also does something most men are never told about until they try to stop. Maximus states it on its own testosterone page, which is an unusual thing for a company that sells the treatment:

Testosterone therapy normally works by replacing what your body makes. Your body reads the higher level, sees testosterone production is not needed, and winds down. It is how the drug works, and it is why coming off is hard. Maximus, maximustribe.com/testosterone

The mechanism is a thermostat, and it is described in detail in the company's own clinical papers. Your brain releases GnRH, which tells the pituitary to release two hormones, LH and FSH. LH instructs the Leydig cells in the testes to produce testosterone. FSH supports sperm production through the Sertoli cells. When the brain detects testosterone arriving from outside, it turns the whole chain down.

This is the trade every man on standard replacement makes, usually without being asked. It is also the specific problem Maximus set out to engineer around, and the reason three of its four routes exist at all. Their advertising states the goal in seven words: published clinical data, no needles, fertility preserved.

The routes

Four ways back, and what each one costs

Maximus publishes the comparison itself, including the column most clinics would rather leave out. Dependency means your own production shuts down while you are on it. Fertility markers are the LH and FSH from the diagram above.

Dosing, dependency, fertility and starting prices as published in the comparison table on maximustribe.com/testosterone. Maximus notes that injectable testosterone paired with HCG can maintain testicular size and sperm production, and that the cream maintains fertility markers when taken with enclomiphene at an adjusted dose. Which route applies to you is a prescriber's decision, made on your bloodwork.

The pairings are not a marketing arrangement of existing drugs. Maximus states that the oral and cream combinations with enclomiphene are patented, proprietary Maximus combinations, and it has run the trials to see whether they hold up.

The evidence

What happened when they ran the studies themselves

We don't rely solely on external studies. We run our own clinical trials and open-source the data. Maximus, maximustribe.com/testosterone

Four published papers, four different questions, all of them signed and readable in full on their science page. The headline numbers:

Sources, in order: the Maximus enclomiphene protocol (1,250 participants), the same paper, oral testosterone and enclomiphene (79 men, both p < 0.025), and liver enzyme trends on oral native testosterone (100 patients over 90 days). Study populations are self-selected clinic patients, not a randomized general population.

The topical paper is the one that answers the fertility question directly. Forty-five men on 100 mg daily topical testosterone were given enclomiphene at three doses. At the lowest dose, 6.25mg, LH and FSH collapsed by 89% and 75%. At 12.5mg and above, every patient held LH and FSH above the fertility thresholds while total testosterone rose 163% and free testosterone 216%. Men who arrived already suppressed from injectable testosterone regained measurable LH and FSH.

None of this makes the treatment right for any particular man. It makes the company falsifiable, which is a rarer quality in this category than any specific result.

The signatures

Who put their name on the protocols

Maximus was founded in 2020 on a single premise, stated on its own about page: "traditional medicine is focused on normalization, not optimization." Everything above is that sentence in practice. The protocols are, in the company's words, "designed by leading doctors and professors including medical school faculty from UCSF, UNC, Tulane, UCLA and Cedars-Sinai."

Names and titles as published on maximustribe.com/about-us and the Maximus science page.

The next step

How to find out where you actually stand

Before any of this is a decision, it is a measurement, and most men take the measurement badly. The Maximus guide is specific about how to get a number worth acting on:

• Draw between 7 and 10 AM. Testosterone peaks in the early morning and falls 20 to 30% by afternoon. The same man who reads 340 at 3 PM would likely have read 425 to 450 at eight in the morning, and men have started treatment on that difference.
• Ask for the full panel, not just total. Total testosterone, free testosterone, SHBG, estradiol, LH and FSH. The last two tell you whether the problem is in the testes or in the signal from the brain.
• Ask for LC-MS. Liquid chromatography mass spectrometry is the gold standard. Cheaper immunoassay tests are less accurate, especially at the low end where the decision gets made.
• Retest 4 to 6 weeks later. A single test is a snapshot, and levels can vary by 20% or more between draws. Same lab, same hour.

All four rules are published in the Maximus guide to testosterone levels by age, in the section on when and how to test.

The members

What men on the protocols say

Maximus holds a 4.4 out of 5 on Trustpilot across 1,044 reviews, checked on August 13, 2026. Four of them, published and quotable:

All four are published on the Maximus Trustpilot page and belong to their authors. Individual results vary, and the same page carries critical reviews, most of them about billing and fulfillment rather than the medicine.

The point

One percent, going the other way

The thing about a slow loss is that it is only ever measured against the version of you who is already gone. A man at 48 does not compare himself to himself at 28. He compares himself to last year, where the difference is one percent, and one percent is nothing.

Run the same arithmetic in the other direction. A number that has drifted for eighteen years does not need eighteen years to move back. In the Maximus enclomiphene study, the average participant doubled his free testosterone. In the oral study, total testosterone rose fourfold. The decline was slow because biology is patient. The correction is not obliged to be.

You do not have to accept a range that was drawn wide enough to include the version of you that you do not want to be.