Learn
The science, honestly explained.
Guides to the Shettles method, vaginal pH, ovulation timing and what research says about conceiving a girl or a boy. Every guide cites its sources and says what isn't proven.
Guides
Guide
The Shettles method, explained
What the Shettles method says about timing, vaginal pH and conceiving a girl or boy, where it came from, what research has found, and how Genesyx helps couples follow it safely.
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Guide
Vaginal pH and trying to conceive
What vaginal pH is, what a healthy reading looks like, what changes it, why the Shettles theory focuses on it, and how to test safely at home.
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Evidence
The evidence behind Genesyx
An honest review of the research on the Shettles theory, intercourse timing, X and Y sperm, vaginal pH and diet, and what Genesyx does and does not claim.
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Guide
How to conceive a girl or a boy: what the evidence says
The natural methods couples try when hoping for a girl or a boy, including Shettles timing, vaginal pH and diet, with an honest look at what research does and doesn't support and how to try safely.
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Guide
Ovulation tests and your fertile window
How ovulation tests work, when to start testing, how to read an LH surge and how to find your fertile window when trying to conceive, with UK guidance on how often to have sex.
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The programmes
XX programme
The XX programme: trying for a girl
The Genesyx XX programme is a 90-day preconception programme for couples hoping for a girl. What's in it, how the Shettles XX timing works, what to expect month by month, and what the evidence says.
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The XY programme: trying for a boy
The Genesyx XY programme is a 90-day preconception programme for couples hoping for a boy. What's in it, how the Shettles XY timing works, what to expect month by month, and what the evidence says.
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FAQ
Frequently asked questions
What Genesyx is, what it can and cannot promise, and how the programme works.
Evidence for the Shettles theory is mixed. Genesyx helps you follow the theory consistently; no outcome is guaranteed. These guides are general information, not medical advice.