The color of a fruit or vegetable is much more than just an aesthetic quality; it usually points towards certain nutrients that are abundantly available in these foods. For example, blue and purple usually indicate the presence of two powerful antioxidants: anthocyanins and phenolics. Both of these nutrients are known to help prevent the occurrence of serious medical conditions such as cancer, heart disease and Alzheimer’s. This makes these antioxidants especially important for those with diabetes to include into their diet, as they are very susceptible to developing all of these health issues.
Aside from their potent antioxidant content, blue and purple fruits and vegetables have been noted for their ability to slow down aging. This may be due to certain nutrients found in them, with the most well studied example being the compound resveratrol found in grapes. In other cases, certain blue and purple fruits such as blueberries and blackberries have shown to reverse memory loss, which is a common side effect of aging. Although scientist are not entirely sure about the specifics behind these studies, the research does seem to indicate that plant foods of this shade can mitigate some of the negative consequences of aging.
There are many different types of blue and purple fruits and vegetables which makes them easy to incorporate into your diet. A few of the more common varieties include blueberries, purple grapes, blackberries, plums, eggplant and raisins. Ideally, you should be getting anywhere between 7-9 servings of fruits and vegetables per day, especially if you’re hoping to receive any health benefits from them. While these foods are generally safe, we still encourage you to speak with your doctor or nutritionist before making any sudden changes to your diet.