No
No
No
No
Yes
Yes
Yes
Yes
No
You’ve 
found the gold standard of nutrition research
Apply
Caution
Apply
Caution
Wait for
more
research
Are the
subjects
humans?
Is it 
robust?
Do other 
studies support 
it?
Is it
Industry funded?
Is it in a scientific journal?
Is the journal reputable?
Don’t
trust it
Question
it
Yes
Yes
No
Should you trust that study?
Go to the source