30 Mar 2020 --- Nutrients such as tryptophan and melatonin consumed through food may have a positive effect on sleep metrics, according to a new Australian study. It set out to establish the link between diet and sleep in healthy individuals, which is generally less researched in comparison to studies concerning patients with sleep-related disorders. As simple dietary changes to increase tryptophan and melatonin intake via food items were found to improve sleep quality, the study affirms that its findings are an important step in determining diet-related guidelines for general populations.