@christianpoulos: Comment BLONDIE and I’ll send you my Genetic Blueprint Guide to understand how your genetics influence your hormones, physique, and performance. Hair color is more dynamic than most people realize. Pigmentation is heavily genetic, but hormones can influence how those genes are expressed. That’s part of why hair often darkens during puberty, why male and female coloration can differ within the same species, and why androgen-driven changes can show up in places like facial hair. So being blond doesn’t tell you someone’s testosterone level. Two men can have identical testosterone and completely different pigmentation because they started with different genetics. The interesting part is what happens within the same person over time. Your genes establish the blueprint. Hormones can influence how that blueprint gets expressed.

Christian Poulos, MD

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Sunday 06 September 2026 17:12:35 GMT