What 'graded evidence' actually means

Most of the internet sells peptides on the strongest-sounding claim it can find. We do the opposite: we start from the peer-reviewed record and tag each finding by how strong it really is. Four tiers, one honesty line on every claim.

The four tiers

• Strong — replicated human trials. The finding has held up more than once in people.
• Human — clinical, but limited in scale: a single trial, a small sample, or a narrow population.
• Weak — a small or mixed signal. Preliminary; treat with caution.
• Mechanistic — preclinical or in-vitro only. A story about how something might work, not proof that it does in a human.

Why the honesty line matters

Alongside every claim we state what the evidence doesn't show. That single sentence is the discipline the rest of the market skips — because a lab-dish result dressed up as a human outcome sells better. It also happens to be wrong. Grading evidence honestly is slower and less flattering, and it is the entire product.

You'll see the four-tier box across the whole platform: on the Learn hubs, in the Library reviews, and throughout the blog.