Research

Mixed

Bodybuilders who consume dietary supplements (DS) frequently experience adverse side effects, specifically skin rashes (21%), increased liver enzymes (10.8%), and hair loss (9.4%).

If you are taking dietary supplements, monitor your body for changes. The most common issues reported by bodybuilders are skin rashes, hair loss, and elevated liver enzymes. If you notice these symptoms, consult a healthcare provider and review your supplement stack, as they may be contaminated or causing physiological stress.

ModerateSupportsMEDIUM confidence
The most common side effects caused by the use of DS are, respectively, skin problems such as skin rashes (21%), increased liver enzymes (10.8%), hair loss (9.4%)...
Yasaman Bajool et al. · Current Developments in Nutrition · 2024

Why this rating

Cross-sectional self-reported data; correlation does not prove causation, but the high frequency of reported adverse events is significant.

Source

Knowledge, Prevalence, and Consequences of Dietary Supplements Intake among Iranian Bodybuilders

Yasaman Bajool et al. · Current Developments in Nutrition · 2024

DOI 10.1016/j.cdnut.2024.104437

cross_sectional · n=160Cited 3×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

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