TRT journey content: what week 103 probably gets right and wrong

What did @bigpuncustoms actually say?

He's 103 weeks into TRT and decided to try a carnivore diet mid-journey, using ChatGPT to build his meal plan. He started at 275 lbs and dropped to 271.2 by Sunday. The honest part of his story: "the first 3, 4 days, like, oh my God, I was so depleted and so exhausted." He found 225 lbs on bench felt like "no gas in the tank" and ultimately quit carnivore because it didn't fit his lifestyle, especially on filming days when food options were processed and sugar-heavy. No bold health claims here. Just a guy logging his week, which is refreshingly low-key for TRT content.

He doesn't cite protocols, doses, or blood labs. This is a diary entry, not medical advice. That context matters when fact-checking it.

Does the science back this up?

Yes, actually. The fatigue and strength drop he described in the first few days of carnivore are well-documented and have a name: the keto adaptation period. This is not bro-science. It's physiology.

When you eliminate carbohydrates, muscle glycogen stores deplete within 24 to 48 hours. Glycogen is the primary fuel source for high-intensity resistance training. Volek et al. (2015, Nutrition & Metabolism) documented that athletes transitioning to low-carbohydrate diets experience significant short-term performance decrements before fat oxidation pathways upregulate. Burke et al. (2017, Journal of Physiology) found that elite race walkers on ketogenic diets showed impaired high-intensity performance even after three weeks of adaptation, suggesting the transition window can extend beyond a few days for some people.

His four-pound drop in one week is also plausible. Glycogen holds roughly 3 to 4 grams of water per gram. Deplete it, and you lose water weight fast. That's not fat loss. It's fluid.

What did they get wrong (or right)?

He got the physiology right without knowing he was describing it. Credit where it's due. The fatigue, the strength drop, the short-term weight loss, all consistent with what the literature says happens during early carbohydrate restriction.

What's worth questioning is the ChatGPT diet plan. Large language models are not registered dietitians. They can produce plausible-sounding macronutrient ratios, but they cannot account for his TRT protocol, his training volume, his cardiovascular output (he logged nearly 28 miles of bike cardio that week), or his individual metabolic rate. Using an AI chatbot to design a diet while on hormone therapy, with that training load, is a meaningful gap. It's not dangerous in the way taking an unverified supplement stack would be, but it's not the same as working with someone who can read labs.

He also doesn't mention whether his TRT provider knows he shifted his diet this dramatically. Testosterone metabolism and SHBG levels can be influenced by dietary fat intake, which matters when you're on exogenous testosterone.

What should you actually know?

If you're on TRT and considering a carnivore or ketogenic diet, the interaction between dietary fat, cholesterol metabolism, and testosterone bioavailability is real and worth discussing with the clinician managing your protocol. Hamalainen et al. (1984, Hormone and Metabolic Research) found that low-fat diets reduced total and free testosterone in men, suggesting dietary fat plays a role in androgen availability. That cuts both ways: very high saturated fat intake has its own cardiovascular considerations, especially for men already on exogenous testosterone.

The four-pound week-one weight drop he described is almost entirely water and glycogen, not body fat. Expecting that rate to continue is how people set themselves up for disappointment and then abandonment, which is exactly what happened here. He tried it, got off, got back on, then quit. That cycle is common and predictable when the adaptation window isn't properly managed.

Anyone combining TRT with significant dietary changes should be getting bloodwork that includes lipid panels, hematocrit, and free testosterone, not just relying on scale weight and gym performance as feedback signals.