Editorial policy

Sources

We rely on primary sources: peer-reviewed papers (usually found through PubMed), trial registries such as ClinicalTrials.gov, and government health agencies such as the National Institutes of Health, the National Institute on Aging and the FDA. News coverage can point us to a study, but the study itself is the source. Preprints that haven’t been peer reviewed are labeled as such.

Evidence labels

Every study we discuss gets a label:

• Human trial  People were randomly assigned to the treatment or a comparison. The strongest single kind of evidence.
• Human observational  Researchers tracked people and looked for links. Shows association, not cause.
• Animal study  Mice, worms or other animals. Often promising; most results never carry over to people.
• Lab / cells  Cells in a dish. Useful for mechanism, a long way from advice.
• Review  A summary of many studies. As strong as the studies it pools.

We also note the number of participants, whether women were included, and how long the study ran.

What we never do

• Say a product or habit “reverses aging,” “cures” anything, or adds years to your life.
• Turn a mouse or cell result into advice for people.
• Recommend doses beyond restating what a study tested or what an official source says.
• Invent personal experiences, testimonials, quotes or statistics.
• Accept payment for coverage.

How AI is used

Articles are researched and drafted with AI. Before an article publishes, every number, date and study detail it states is checked against the linked source in the same session; claims that can’t be confirmed are removed, and an article that can’t stand without them is held back. Each article shows the date it was last checked.

Corrections

When we get something wrong, we fix it, note the change at the bottom of the article, and log it on the corrections page.