1. What distinguishes an “established mechanism” from a “hypothesized mechanism”?

Established mechanisms have converging evidence from multiple independent studies and methods
There is no real difference between the two terms
A hypothesized mechanism is always wrong
Established mechanisms only apply to compounds discovered in the last decade

2. Which best describes how mechanistic evidence for a compound typically builds over time?

A single study is always sufficient to confirm a mechanism
Initial observation, proposed pathway, targeted testing, then convergence across independent studies
Mechanisms are established before any observation is made
Evidence-building has no typical pattern worth tracking

3. CJC-1295, Ipamorelin, and MK-677 all fall under the same broad category. What does this lesson emphasize about that grouping?

Being in the same category means they share an identical mechanism
Category labels group compounds by broad outcome, not identical mechanism, route, or half-life
All three have the same route of administration
Category membership guarantees the same half-life

4. Why does a compound’s discovery era matter when evaluating its literature?

It doesn’t — all compounds should have identical literature depth
Older discoveries have generally had more time to accumulate independent replication and reviews
Newer compounds are always less reliable than older ones
Discovery era only matters for compounds sold as blends

5. A compound has a thin, recent literature base. What does this lesson say that most likely reflects?

The compound is definitely unsafe
It’s often simply a newer research area, not automatically a red flag
The compound has been discontinued
The mechanism has been fully disproven