People think fast food is high in calories and fat, but many of us also don't realize how high in sugar certain fast food meals can be. In fact, it's often the meals that sound "healthy" that pack the most sweet stuff. For example, a Wendy's Garden Sensations Mandarin Chicken Salad contains 33 grams of sugar; a McDonald's Asian Salad has 22 grams. (Public health organizations recommend consuming no more than 24 grams of added sugar per day.) Recent research has indicated high sugar intake can lead to myriad health issues from heart disease to diabetes to obesity. Brain scans also reveal how sugar can be addictive: the more you eat, the more you're likely to keep craving it.