Hi -,
Here's what testosterone doesn't do: fall off a cliff at 40.
It drifts down by roughly 1% a year from around 30. Barely noticeable in the moment, but a man with healthy levels at 25 can sit 20% lower by 50. Often while still technically "in range."
The bit the supplement ads skip? How steeply your line falls isn't fixed. Two people the same age can be worlds apart, and most of that gap is sleep, stress, training and food, not luck.
It's not a men-only story either - there's a popular myth about what menopause does to women's testosterone that's well worth clearing up (spoiler: the dramatic drop you've heard about is a different hormone entirely).
Today's blog breaks it down for both men and women, decade by decade, and what to actually do about it.
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