This randomized controlled trial assessed the effects of zinc supplementation on the sleep quality of ICU nurses over one month. Participants who received zinc supplements showed significant improvements in total sleep quality, subjective sleep experience, and reduced time to fall asleep compared to the placebo group. Zinc also increased serum zinc levels, suggesting a connection between zinc status and sleep improvements. This finding is significant as better sleep quality can enhance cognitive performance, alertness, and overall well-being in a high-stress profession.
Nurses or individuals with poor sleep may benefit from zinc supplementation, particularly if dietary intake is insufficient. Including zinc-rich foods like seafood and nuts can also support sleep. As results are promising but limited to specific populations, consult a healthcare provider for guidance before supplement use.