The Claim
In healthy young adult males, suppression of cortisol abolishes the inverse correlation between morning cortisol levels (0–4 h) and osteocalcin levels (4–8 h) observed on placebo days, demonstrating that the natural circadian rhythm of cortisol is required to sustain this temporal relationship.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In healthy young men, the natural daily drop in cortisol is linked to a rise in osteocalcin later in the morning; when cortisol is artificially suppressed, this link disappears.
See the scientific wording
In healthy young adult males, the inverse correlation between morning cortisol levels (0–4 h) and osteocalcin levels (4–8 h) on placebo days is lost when cortisol is suppressed, indicating that cortisol’s natural rhythm is necessary to maintain this temporal relationship.
When cortisol rises in the morning, it directly tells bone cells to stop releasing osteocalcin. A few hours later, osteocalcin levels drop as a result. If cortisol doesn't rise, bone cells keep releasing osteocalcin, and the normal drop never happens.
What the research says
1 studyIn young men, high morning cortisol usually means osteocalcin drops a few hours later — but when scientists blocked the morning cortisol spike, this drop didn’t happen anymore. So cortisol’s natural rise is needed for this pattern to occur.
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.