Evidence library
Short research briefs on the questions people actually ask, each one rated for how strong the evidence behind it is — and each one saying plainly what is still unsettled.
Six strength ratings · Uncertainty stated, not buried
What is established, and what is not yet.
No briefs are published yet
A research brief makes a claim about what the evidence shows, which is exactly the kind of page that should not publish without review. The rating method is written up and ready.
How we rate evidenceQuestions being worked through.
Written and not yet published. Each page shows what it will cover and what it is waiting on; the guidance itself stays held back until a reviewer has signed it off.
Research brief
How much protein preserves muscle when appetite is suppressed by medication?
What is reasonably well supported about protein and muscle preservation during weight loss, what is being extrapolated, and what has not been studied in the people now asking the question.
In development · not yet reviewed
See what is coming
Clear answers, without pretending every answer is settled.
Read how the strength ratings work before you rely on one.