TRT claims on TikTok: what the testosterone science actually says

What did @dfdzig actually say?

The creator walked through his personal TRT side effect history with unusual candor. He reported gaining roughly 15 pounds of water weight in the first two weeks, elevated hematocrit and hemoglobin levels, a drop in HDL cholesterol, and significant mood swings including anger when his testosterone levels climbed above 1,500 ng/dL. His clinic's response to the hematocrit issue was to split his dose into three injections per week instead of two. He's planning to take omega-3s and vitamin D3 to recover his HDL. These are real, documented TRT side effects, and the fact he named them honestly is worth acknowledging before we pick apart the details.

Does the science back this up?

Mostly, yes, with some important caveats. Water retention in early TRT is well-documented and tied to estradiol conversion from exogenous testosterone. The hematocrit elevation is one of the most consistently reported adverse effects in clinical literature. Mood changes at supraphysiologic levels are real. His HDL concern is legitimate. But some of his proposed fixes are either unproven or oversimplified.

On hematocrit: a 2018 analysis by Ohlander et al. in European Urology confirmed polycythemia is the most common reason men discontinue TRT. Splitting doses more frequently can modestly reduce peak testosterone spikes, but the evidence that this specifically reduces erythropoiesis is limited. The more proven interventions are dose reduction, switching to shorter-acting formulations, or therapeutic phlebotomy.

On HDL: a meta-analysis by Corona et al. (2016, Journal of Sexual Medicine) found TRT produces modest reductions in HDL, roughly 0.4 mmol/L on average. The omega-3 and vitamin D3 approach he mentions for HDL recovery has mixed evidence. Omega-3s at high doses (above 2g/day of EPA/DHA) can raise HDL modestly, per a 2019 Cochrane review, but effects are small and inconsistent.

What did they get wrong (or right)?

He got the core side effect list right. But a few things deserve pushback.

First, the claim that drinking more water resolved his water retention is almost certainly coincidental. Water retention from TRT is driven by aldosterone activity and estradiol-related sodium retention, not dehydration. It typically self-resolves as the body adjusts hormone levels, or responds to aromatase inhibitors if estradiol is genuinely elevated. Hydration isn't the mechanism here.

Second, splitting doses to address hematocrit elevation is a reasonable clinical experiment, but presenting it as an established solution is a stretch. There is no strong randomized controlled trial data confirming that injection frequency meaningfully lowers hematocrit. If his levels remain elevated, he needs a hematologist conversation, not just a scheduling change.

Third, his cholesterol framing is incomplete. He says his total cholesterol came "way down" as if that's uniformly good news. TRT can lower LDL, which is generally favorable, but if it also lowers HDL significantly, the net cardiovascular effect is ambiguous. Lipid panels need to be read in context, not as isolated wins.

What should you actually know?

TRT side effects are real, manageable, and require actual monitoring, not just lifestyle tweaks.

• Hematocrit above 54 percent is a recognized threshold for intervention per Endocrine Society guidelines (Bhasin et al., 2018, Journal of Clinical Endocrinology and Metabolism). If splitting doses does not work, dose reduction or phlebotomy are standard next steps.
• Testosterone levels above 1,000 to 1,100 ng/dL are generally considered supraphysiologic in most clinical protocols. The creator's level of 1,500 ng/dL explains the mood instability he described. This is not a normal therapeutic range.
• HDL changes on TRT are modest in most studies, but individual variation exists. Omega-3s are not a reliable fix. Exercise, particularly aerobic training, has more consistent HDL-raising evidence.
• Water retention in early TRT usually resolves within four to eight weeks regardless of hydration changes. If it persists, estradiol levels should be checked.

The bottom line on this video

This creator is doing something genuinely useful: talking openly about the messy, uncomfortable parts of TRT that promotional content glosses over. The side effects he named are real and clinically recognized. His instinct to work with his clinic rather than self-manage is correct. Where he stumbles is in the explanations for why things happened and the proposed fixes, some of which are folk remedies dressed up as solutions. If you are on TRT and experiencing any of these symptoms, the conversation belongs with a prescriber reviewing your labs, not a TikTok comment section.