Need
Could the goal be reached without buying a product or adding another intervention?
The NST methodology
Research process
The goal is not to collect the largest number of sources. It is to find the evidence that best addresses the decision and explain it in context.
01
Identify the decision a person is trying to make, the outcome they want, and the context that may change the answer.
02
Look for appropriate primary research, systematic reviews, consensus guidance, and useful supporting sources.
03
Consider study quality, relevance, consistency, limitations, population, outcomes, and the size of any observed effect.
04
Explain what the findings may mean in practice without presenting uncertain evidence as a guaranteed result.
05
Evaluate suitability, tradeoffs, cost, usability, alternatives, and whether an intervention or product is needed at all.
06
Revisit published guidance when stronger evidence, important corrections, or meaningful product changes become available.
Evidence standards
Evidence must be evaluated for relevance and reliability before it can support a conclusion.
Recommendations and comparisons
Could the goal be reached without buying a product or adding another intervention?
Who may benefit, who may not need it, and who should seek qualified professional guidance?
Is the claimed benefit supported, plausible but uncertain, or primarily based on marketing?
What are the limitations, costs, practical burdens, risks, and reasonable alternatives?
Are commercial relationships and the basis for the recommendation clearly disclosed?
Has NST physically tested the product, or is the assessment based on cited evidence and verified product information? The page should state this plainly.
What reviewed means
When a page says it was reviewed, the named reviewer is currently Gabriel Silva, a sports science student and the founder of North Star Theory. His profile explains what that credential does and does not mean.
Each published research, guide, comparison and product page shows who reviewed it, when it was last verified and when its next review is due. If something on a page is wrong, the corrections policy and log explain how to report it and where corrections are recorded.
Transparency
Affiliate links may support NST without changing the price paid by the reader. Their presence should be disclosed, and they should not determine whether an option is recommended.