20. Marshmallows

Marshmallows are a sweet treat, but their main ingredient is gelatin, which is made from boiled animal carcass parts like skin, bones, and connective tissues. They also contain high amounts of sugar, corn syrup, and artificial flavors and colors.
Why You Should Avoid Them
Knowing that marshmallows contain boiled animal parts is enough to turn many people off, but the high sugar content can also lead to obesity, diabetes, and tooth decay. If you’re craving something sweet, try making your own vegan marshmallows or opt for a healthier dessert.