Caffeine was the hardest addiction for me to kick, and we are wired for sugar addiction. Sugar triggers an insulin spike, which is the fat storing hormone. In the late summer and fall, when fruit ripens, our genes caused our ancestors to gorge on fruit and store fat for the long, hard winter ahead. Now that we live in abundance, with a surplus of calories available everywhere we turn, this storage of fat for the winter is unnecessary. Worse, food companies recognize that we are wired to want sugar, so they add sugar to virtually everything to make it more addictive. This is why I minimize the highly processed foods I consume and when I consider any food with a nutrition label I look and see if there are added sugars (which there almost always are.)