The Claim
In larval zebrafish, chronic elevation of endogenous glucocorticoid levels during early life is associated with a blunted cortisol response to acute stressors, and this altered stress response persists into later developmental stages, suggesting that early-life glucocorticoid exposure may influence long-term stress system responsiveness in this species.
What the research says
Roughly balanced
Support and challenge are close. The picture may shift as more studies come in.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
If baby zebrafish have too much of a stress hormone early in life, they might not react as strongly to stress later on — like their stress system gets 'numb' and stays that way.
See the scientific wording
Chronic elevation of endogenous glucocorticoid levels during early life in larval zebrafish is associated with a blunted cortisol response to acute stressors, which persists into later developmental stages, suggesting early glucocorticoid exposure may influence long-term stress system responsiveness in this species.
What the research says
1 studyThe study used light to turn on cortisol production in baby zebrafish and found that this made their stress response weaker, and the effect lasted as they grew. This supports the idea that too much stress hormone early in life can dull the stress system long-term.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.