Micronutrient evidence brief
Zinc is an essential mineral involved in immunity, wound healing, and hormone biology. It matters most when intake or status is low.
Important for normal physiology, but supplementation is not a proven strength, testosterone, or hypertrophy aid in replete lifters.
ZMA RCT: no rise in total/free T or training adaptations in 42 trained men.
Use intake review or labs where appropriate. Avoid chronic high-dose use without copper and clinical context.
Marketed testosterone claims should be treated as deficiency-correction claims, not muscle-building claims.
Source Drawer
The score reflects evidence that the supplement does its stated job. Some jobs are direct, such as strength, endurance, or recovery; others are indirect, such as sleep, mood, appetite, or health support. A real effect can still receive a cautious practical rating when dose, safety, product quality, or audience fit remain uncertain.
Send the disputed claim, source link, and why it changes the practical verdict. Corrections that materially affect the claim, dose, caveat, or rating are prioritized.
Report a source or rating issue