Pterostilbene is another major component found in blueberries that can actually protect the body against colorectal cancer, a disease that takes the lives of approximately 50,000 people each year. More than one million women will be diagnosed with breast cancer this year, and at least half of that number will die. Blueberry extract has been proven to inhibit the growth of breast cancer cells, and was also found to decrease particular enzymes associated with the spread of cancer. With all the evidence available to us today, there is no doubt that blueberries are one of the most effective tools we can use to protect our bodies from developing various types of cancer. Who knew that good things could be found in such small packages?