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.

6

Pro

0

Against

Evidence from Studies

Supporting (1)

6

Community contributions welcome

6

Optogenetic induction of chronic glucocorticoid exposure in early‐life leads to blunted stress‐response in larval zebrafish

Cross-Sectional Study

Animal

2024 Jun

The 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.

Contradicting (0)

0

Community contributions welcome

No contradicting evidence found

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.

Source Study

Optogenetic induction of chronic glucocorticoid exposure in early‐life leads to blunted stress‐response in larval zebrafish

Score: 6

DOI: 10.1111/ejn.16301

Similar Assertions

When baby zebrafish have higher stress hormone levels early in life, it seems to change how certain genes in their brain work—turning down one gene linked to stress control and turning up another—hinting at how early stress might rewire their stress response system.

6

0

76%