Okay, so we all love chocolate, sweets, and ice cream. However, when you eat lots of sugar, your insulin levels rocket in response, which in turn triggers inflammation. Too much insulin can also cause a cascade of hormones that cause your pores to clog. When combined, this inflammation and clogging make for some pretty nasty looking zits. This doesn't mean you have to ditch everything sweet you enjoy in life, just find low sugar alternatives.