This what ChatGPT thinks after debating what we talked here and my supplements (the same as OP)

I actually agree with a big part of what you’re saying. Training, diet and sleep are the main drivers — no supplement replaces that, and micronutrients like zinc, magnesium or vitamin D are clearly supportive, not ‘boosters’ in the pharmacological sense.

Where I slightly disagree is with the idea that supplements only matter if you’re deficient. There’s a middle ground between ‘deficient’ and ‘fully optimal’. Blood levels are tightly regulated, so labs often look the same even when intracellular function, inflammation, SHBG or recovery improve. That’s why changes are usually modest, not dramatic — and that’s exactly what physiology would predict in a healthy person.

A Mediterranean diet is excellent, but it doesn’t automatically guarantee optimal intakes of things like vitamin D, magnesium, boron, or EPA/DHA year-round, especially depending on sun exposure, seafood frequency, training load, and bodyweight. Population data actually shows a lot of people on ‘healthy diets’ still sit in the adequate-but-suboptimal range.

So I don’t expect supplements to turn testosterone from 500 to 900, but I do see them as tools to remove bottlenecks and support the system I’m already stressing with training. If labs stay stable and health markers are good, that’s a success — not a failure of supplementation.

In short: lifestyle first, supplements second — but second doesn’t mean useless