Rats that drank stevia didn’t prefer male rats as much, seemed less nervous in new places, but were more cautious and took longer to explore.
Evidence Quality Assessment
Claim Status
overstated
Study Design Support
Design cannot support claim
Appropriate Language Strength
association
Can only show association/correlation
Assessment Explanation
The abstract uses direct descriptors ('showed decreased', 'lower anxiety') implying causation, but the observational design without randomization confirmation limits conclusions to association.
More Accurate Statement
“Female Sprague-Dawley rats exposed to Stevia rebaudiana Bertoni extract are associated with decreased sexual partner preference, reduced anxiety-like behavior, and increased risk assessment behavior, suggesting altered neurobehavioral responses.”
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.
Evidence from Studies
Supporting (1)
The study gave female rats stevia from a young age and found they cared less about mating partners, were less nervous, and checked their surroundings more carefully — just like the claim said.