Peer-reviewed research concerning supplements, summarized and appraised in plain language with every source cited.
This study looked at whether taking ZMA, a supplement combining zinc, magnesium and vitamin B6, before bed for two nights could improve sleep and next-day performance in healthy active men.…
This study set out to see whether a zinc supplement improves zinc status in healthy middle-aged American men who eat meat, a group that had not been looked at. The…
This study looked at whether magnesium supplements raise testosterone in athletes and in sedentary men, at rest and after exercising to exhaustion. Thirty healthy men aged 18 to 22 were…
This study looked at whether zinc levels affect testosterone in healthy men. It compared zinc levels and testosterone in 40 men aged 20 to 80, induced zinc deficiency in 4…