I've Been On TRT for 7 Years, Here's What Clinics Won't Tell You

You're tired all the time, you're gaining fat around your midsection, your sex drive is gone, and you can't build muscle like you used to. And somewhere in that mix you started typing "low testosterone" into a search bar, which is exactly what the clinics are counting on.

Before you make any decisions about starting testosterone replacement therapy, you need to watch this entire video, because most doctors are lying to you, and the lie has nothing to do with whether the treatment works, since it does, but with the part where they skip the question of why yours is low in the first place.

And in most cases, it's caused by fixable lifestyle problems. But TRT clinics make money when you start treatment, not when you fix your lifestyle.

I take testosterone myself, and I spent years working inside a clinic before I saw how the model actually runs, and Most TRT clinics are more content delivering template protocols and creating more problems than solutions by selling expensive peptides men don't need and getting men on TRT who could have fixed their testosterone naturally.

So before we touch a single fix, you need the map, because the whole argument falls apart if you do not know where the system breaks.

Your testosterone comes off a four stage chain that runs brain to pituitary gland to testicles to conversion, and if any one of those stages stalls, the number at the bottom drops no matter how healthy the other three are.

Stage one is your hypothalamus, which sits at the base of your brain and acts as the command center for the whole hormonal system. It releases a hormone called GnRH, which is produced primarily when we sleep, and I will say plainly that I cannot point you to a study proving that sleep timing is the primary driver of its release, so treat that as what I have seen in client blood work rather than settled literature.

The pituitary gland picks up from there. GnRH hits it and it fires off two hormones, LH and FSH. LH travels down to your testicles carrying one instruction, make testosterone now, and FSH handles sperm production and general testicular upkeep.

Stage three happens inside the testicles, in the Leydig cells, which are the specialized cells that hold the enzymes for building testosterone out of cholesterol (Neaves 1975). LH binds to those cells and the first step is cholesterol side chain cleavage, the reaction that snips cholesterol down into pregnenolone before anything else can happen (Khurana 1993). The starting molecule is cholesterol itself, not some abstract precursor buried three steps upstream, and that fact alone should tell you why crash diets and zero fat intake wreck this whole chain.

Stage four is conversion, and this is where you actually feel it, because testosterone floating in your blood is not the thing producing the sensation you are chasing. An enzyme called 5-alpha reductase converts a portion of it into DHT, and aromatase converts another portion into estradiol, which you need for bone density, brain function, and sexual desire.

5-alpha reductase converts testosterone to DHT, which drives libido, erectile function, muscle hardness, basically all the things that make you mask on. That last part is what I see with clients and it is not something I can hand you a trial for, though the enzyme itself is well documented, including how much its activity varies between people and between tissues (Boudou 1990, Serafini 1985).

A feedback loop governs the whole system on top of these four stages. Once testosterone hits a certain level, a signal goes back up to the hypothalamus and pituitary saying we have enough. Inject testosterone from outside and your body reads those levels the same way. In my experience, that is why guys who start TRT rarely come off it without a fight, and I will be straight with you, the research hasn't given me a clean trial I can point to on the shutdown sequence itself.

Now the fixes, stage by stage, because each one fails independently and most men are broken at stage one or two while the clinic is only ever looking at the number at the bottom.

Stress is the primary lever on your hypothalamus, and sleep deprivation is stress. Studies actually show a 15% drop in testosterone production for every hour of sleep loss per night. And that's because poor sleep spikes cortisol, which directly blocks GNRH production. Your brain reads chronic cortisol as famine or danger, and reproduction is the first system a stressed body turns off.

Work stress, money stress, a marriage falling apart, it all runs through the identical cortisol pathway and hits the identical target in your brain.

Obesity hits the same stage through a different door. Fat tissue makes leptin, and past a certain amount of fat your brain stops responding to the leptin signal properly, which drops GnRH output. Studies actually show men with a BMI over 30 have 30% lower testosterone.

From there the cycle feeds itself, since less testosterone means a harder time building muscle, less muscle means easier fat gain, and more fat means more aromatase pulling what testosterone you have left over to estrogen.

The other end of the range breaks the same stage. Prolonged energy deficit, especially in someone already lean, tells the hypothalamus to cut GnRH and conserve. This is why bodybuilders at 5 to 6% body fat have close to zero testosterone levels or sexual function.

Body fat itself was never the issue. Living at either extreme of it is.

You need four things to fix stage one. Seven to nine hours of sleep every night, not on weekends only. Get morning sunlight for 10 to 15 minutes and turn your phone off one hour before bed. Make sure you keep your room cool between 65 and 68 degrees when you sleep and take about 400 to 600 milligrams of magnesium glycinate before bed, ideally with dinner.

Second, manage stress, because lower cortisol is the entire mechanism for more GnRH.

Third, resistance training three to four times a week with heavy compound movements. Get below 20% body fat and every 10 pounds of fat loss equals 50 to 100 nanograms per deciliter increase in your testosterone levels.

Number four, once you're at a healthy body fat percentage, you need to make sure that you're eating at maintenance or in a small deficit, three to 500 calories max. Make sure that you're getting at least 20 to 30% of your calories from healthy fats, from things like olive oil, avocados, nuts, fish, eggs, and meat, because you are building a steroid hormone and the substrate has to come from somewhere.

The pituitary gland is next, and one of the biggest factors influencing how well it functions is vitamin D. In fact, studies have actually shown that vitamin D supplementation increased testosterone by 25% in most men who were deficient. And the research also showed that most men over 35 are deficient in vitamin D. The other thing that you may not know is that alcohol consumption also directly suppresses LH secretion, and three to four drinks a few times a week is enough to do it.

Elevated prolactin suppresses this stage too, and the usual culprits are antipsychotics, antidepressants, and some blood pressure medications, all of which show up on a single blood test.

Number one, you should be taking about 5,000 IUs of vitamin D daily with vitamin K2 and magnesium. Two, cap alcohol at two to three drinks per week. Three, check prolactin, and if it is high, work with your doctor on the cause rather than the number.

Inside the testicles themselves, zinc is required for the synthesis reactions, and studies actually show that zinc supplementation increased testosterone by 93% in most deficient athletes. Statins matter here because you are cutting the raw material. BPA from plastics and pesticides can damage Leydig cells directly. And temperature matters, because your testicles need to run two to three degrees below core body temperature, which hot tubs, tight underwear, and a laptop parked on your thighs all interfere with.

Number one, take at least 30 milligrams of zinc per day. Number two, get plastic out of your kitchen and bathroom in favor of glass and stainless steel. Keep the boys cool, loose underwear, and stand up every hour if you sit for work.

Most of what I know about this came out of conversations in the free community, so if you want the rest of it and somewhere to ask, the men's group is here: https://www.skool.com/jh-iron-forge-brotherhood/about

Research: Neaves 1975; Khurana 1993; Boudou 1990; Serafini 1985; Melcangi 1985; Grymowicz 2020.

References:

Neaves WB. Leydig cells. Contraception. 1975. https://pubmed.ncbi.nlm.nih.gov/1095296/

Khurana ML, Pandey KN. Receptor-mediated stimulatory effect of atrial natriuretic factor, brain natriuretic peptide, and C-type natriuretic peptide on testosterone production in purified mouse Leydig cells: activation of cholesterol side-chain cleavage enzyme. Endocrinology. 1993. https://pubmed.ncbi.nlm.nih.gov/8404664/

Boudou P, Fiet J, Vexiau P et al.. Greater conversion of testosterone to 5 alpha-dihydrotestosterone, reflecting increased peripheral 5 alpha-reductase activity in nude mice treated with high doses of cyclosporine A. J Steroid Biochem. 1990. https://pubmed.ncbi.nlm.nih.gov/2214776/

Serafini P, Lobo RA. Increased 5 alpha-reductase activity in idiopathic hirsutism. Fertil Steril. 1985. https://pubmed.ncbi.nlm.nih.gov/3155511/

Melcangi RC, Celotti F, Negri-Cesi P et al.. Testosterone 5 alpha-reductase in discrete hypothalamic nuclear areas in the rat: effect of castration. Steroids. 1985. https://pubmed.ncbi.nlm.nih.gov/3834656/

Grymowicz M, Rudnicka E, Podfigurna A et al.. Hormonal Effects on Hair Follicles. Int J Mol Sci. 2020. https://pubmed.ncbi.nlm.nih.gov/32731328/