Does TRT actually fix low energy, or is that oversold?

What did @coach.neek actually say?

The claim here is that your body has a finite methylation resource, that high demand can deplete it, and that taking "methyl donors" like creatine monohydrate and betaine (TMG, or trimethylglycine) will prevent you from ever running into a methylation problem. The creator frames this as an energy issue and pitches the supplement stack as a straightforward solution.

To be fair, they're not inventing this concept. Methylation is a real and well-studied biochemical process. The problem is that the explanation skips over enough detail that the practical advice lands somewhere between simplified and genuinely misleading.

Does the science back this up?

Partly, yes. The core biochemistry is sound. Methylation reactions, including the transfer of methyl groups via S-adenosylmethionine (SAM), are involved in DNA regulation, neurotransmitter synthesis, gene expression, and energy metabolism. Creatine synthesis is one of the largest consumers of methyl groups in the body, which is a real finding.

A study by Stead et al. (2006, Journal of Nutrition) confirmed that creatine biosynthesis accounts for roughly 70% of the body's SAM-dependent methylation reactions. Supplementing creatine to bypass endogenous synthesis does, in theory, spare methyl groups for other uses. Betaine (TMG) is a direct methyl donor that supports the conversion of homocysteine to methionine, a pathway studied in depth by Olthof et al. (2003, Journal of Nutrition). So the ingredients mentioned are not quack supplements. They have plausible, documented mechanisms.

What the creator doesn't say is that for most healthy people eating adequate protein and leafy greens, methylation deficiency as an energy complaint is not a clinically established diagnosis. The evidence for "methylation depletion" as a widespread cause of fatigue is thin outside of specific genetic variants like MTHFR polymorphisms or frank B12/folate deficiency.

What did they get wrong (or right)?

The creator got the mechanism directionally correct but oversold the clinical relevance. Saying methylation is "a resource which your body has in a finite supply" is technically true but misleading in context. It implies routine depletion is common, when the research suggests it's primarily a concern for people with MTHFR variants, vegan diets lacking B12, or high-demand physiological states.

The niacin example is where things get murkier. The creator says taking niacin "pushes around ingredients within your body" and calls this methylation. That's a partial truth. High-dose niacin is indeed metabolized via methylation pathways and can increase methyl group demand, a mechanism noted by Perez-Vizcaino et al. and referenced in integrative medicine literature. But the framing is vague enough to be confusing rather than clarifying.

What they got right: creatine and TMG are among the better-studied methyl donors available over the counter. The recommendation to use pre-methylated supplements to reduce endogenous synthesis burden is grounded in real nutritional biochemistry, not pseudoscience. Credit where it's due.

What they got wrong: presenting this as a universal energy solution without mentioning that most people should get their methylation cofactors from diet first, that genetic testing can clarify actual need, and that blanket supplementation without knowing your homocysteine or B-vitamin status is guessing.

What should you actually know?

If you're on TRT or thinking about hormone optimization, methylation actually does matter more than average. Testosterone metabolism involves hepatic methylation pathways, and some research suggests that men on exogenous testosterone may have modestly altered homocysteine levels, making methyl donor status relevant. A 2016 review in Andrologia noted that TRT can affect homocysteine, though evidence on clinical outcomes is mixed.

Before stacking TMG and creatine for "methylation support," it's worth knowing your homocysteine level, B12 and folate status, and whether you carry an MTHFR polymorphism. These are standard blood markers. If those are normal, you may be buying supplements to solve a problem you don't have.

Creatine monohydrate has a strong independent case for supplementation in athletes and active adults, with benefits for muscle phosphocreatine resynthesis, cognitive performance, and, yes, potentially sparing methyl groups. TMG is safe in typical doses studied in research (1.5 to 6 grams per day in published trials). Neither is harmful for most people. But "you're not going to run into a methylation issue down the line" is a bolder guarantee than the evidence supports.

Talk to a clinician who can actually look at your labs before treating yourself for a deficiency you haven't confirmed.