Our editorial process

Where our content comes from

Our explanations are based on educational resources published by the National Cancer Institute (NCI), part of the U.S. National Institutes of Health. NCI is one of the world’s leading sources of cancer information for the public. NCI does not endorse this site.

How we transform it

We take the original NCI material and make it easier to understand: we simplify the language, organize it into clear sections, add plain-language summaries, and create quizzes, flashcards, and guided reading paths. AI tools may assist in transforming this public educational information into plain language, but the underlying facts always come from the NCI source.

We do not add medical facts that aren’t in the source material. If something isn’t covered by our source, we don’t make it up — we say so or leave it out.

How we check it

Each explanation is reviewed against its NCI source for accuracy and faithfulness. Every article records the exact source page, the date we accessed it, when NCI last reviewed the original (where available), and the date we last updated our version. You’ll find these details on every article and on our sources page.

What we deliberately avoid

We never provide medical advice, diagnosis, or treatment recommendations, and we never tell you what to do about your own health. Those decisions belong to you and your healthcare team. We also avoid frightening or graphic imagery — the goal is calm, clear learning.

Corrections

If you spot something that looks wrong or out of date, please let us know. Because our content mirrors NCI resources, we also encourage you to read the original source linked on every page for the most complete and current information.