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Tell us where you're starting.

Skip the questions: take the 90-second Hormone Age Calculator

Four questions. We'll point you at the research that actually applies to your decade — and stop sending you reads on hormones if you're here for the money desk.

Step 1 of 4

Which decade are you in?

40 to 49

Perimenopause / pre-andropause / catch-up window opens

50 to 59

Active hormone transition / peak earning years

60+

Post-transition / claim-age decisions

Under 40

Planning ahead — that's smart

Step 2 of 4

Which side of the biology?

Woman

HRT, perimenopause, the cortisol-belly research, post-WHI reanalysis

Man

TRT, peptides, the testosterone-cognition link, post-TRAVERSE data

Show me everything

I read both — partner, parent, curious, or all of the above

Step 3 of 4

What's upstream right now?

Step 4 of 4

Where do we send the Sunday letter?

One long-form piece every Sunday on what changes at 40+. We tailor the early reads to what you just told us. Free forever. Reply to anything — Alexander reads every response.

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Your path is ready.

We've saved your profile. Your homepage and the Sunday letter will now lead with what you told us matters.