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Questions about a calculator, a formula you think we have wrong, or a source we should be citing. A correction with a citation attached is genuinely the most welcome message we get — see the methodology for what we currently rely on.

Please do not send us your medical details. We cannot interpret results, we are not clinicians, and this inbox is not a private medical channel. For anything about your own health, your clinician is both better placed and better protected.

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Also useful: the privacy policy, accessibility statement, terms, and developer docs.

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