Women who eat a lot of soy foods like tofu and miso over their lifetime are less likely to have breast cancer come back or die from it.
Scientific Claim
Soy isoflavone consumption is associated with a reduced risk of breast cancer recurrence and mortality in observational studies, particularly in Asian populations with lifelong high intake.
Original Statement
“Soy consumption may actually be associated with reduced risk of breast cancer incidence, recurrence and mortality... Soy consumption may actually be associated with reduced risk of breast cancer incidence, recurrence and mortality.”
Evidence Quality Assessment
Claim Status
appropriately stated
Study Design Support
Design cannot support claim
Appropriate Language Strength
association
Can only show association/correlation
Assessment Explanation
The claim uses 'is associated with' to reflect observational data, avoiding causal language. This matches the evidence from epidemiological studies.
Evidence from Studies
Supporting (0)
Contradicting (1)
This study doesn’t talk about soy and breast cancer at all—it just discusses whether plant chemicals are bad for you, so it can’t tell us if soy helps prevent cancer from coming back.