Our bodies build up a tolerance to sugar. As an article from M.D. Anderson states, we expect things to taste sweet. Cut back on sugar gradually. If you like sugar in your coffee, have you ever tried going without it? Did you like how it tasted? You probably found it too bitter. Instead of cutting all sugar and dramatically changing the way something tastes, gradually reduce it. Over time you won’t notice the change in taste as much and you’ll be more likely to successfully cut back on sugar.