Popsugar Fitness Healthy Eating Tips Foods High in Tryptophan Need a Nod-Off Nudge? Try These Sleep-Inducing Recipes March 15, 2016 by Dominique Michelle Astorino View On One Page Photo 8 of 12 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 8 Fish: Cooked Tuna We knew tuna was chock-full of vitamin D, but did you know it's loaded with tryptophan, too? Make a healthy tuna salad or any of these tasty tuna recipes. Previous Next Start Slideshow Healthy Eating TipsOriginal RecipesHealthy LivingSleepHealthy SnacksHealthy RecipesStress Relief