People lasted longer before quitting, but got no fitter
Across human trials of two to sixteen weeks people held out longer before stopping, and the longer they supplemented the bigger that gain. Aerobic fitness did not follow.
What the study found
Time to exhaustion lengthens while aerobic fitness stays put
Across human trials of two to sixteen weeks, people lasted longer before quitting, and the longer they supplemented the bigger that gain. Aerobic fitness itself did not follow. The clearest results came from products where cordyceps sat alongside other herbs and a training programme.
The caveat · A narrative review, no search method
This is a narrative review with no stated search protocol and no bias appraisal, so it carries forward the weaknesses of the trials it summarises rather than weighing them. Almost everyone studied was young and active. The authors say plainly that older and sedentary people are barely studied.
What we don't know
This is a narrative review with no stated search protocol and no bias appraisal, so it carries forward the weaknesses of the trials it summarises rather than weighing them. Almost everyone studied was young and active. The authors say plainly that older and sedentary people are barely studied.