TTC Guide

Evidence Policy

How articles here are sourced, what we promise, and what we don't sell.

Who writes this site
Every article is written and reviewed by Takuma Sato, MD, a practicing reproductive medicine specialist — not a content team.
What counts as evidence
Peer-reviewed literature, clinical guidelines (ASRM, ESHRE, NICE, WHO, ACOG, JSOG) and standard textbooks (Speroff, Williams Obstetrics). Personal opinions and clinic marketing pages do not.
Citations
Each article ends with a named References section. Where evidence is limited, the article says so plainly.
What we never do
No cure claims, no fear-based framing, no unverifiable statistics. Medical decisions always belong with you and your own specialist.
What we sell
The author's books — nothing else. No supplements, no courses, no coaching, no attached clinic.
Conflicts of interest
Book links carry an Amazon Associates tag. There are no other financial relationships.

General information, not medical advice. Please consult your own specialist for personal decisions.