Grapes and blueberries not only taste good, they are also very good for your health. SF Gate has written you can’t go wrong with either grapes or blueberries when you’re searching for a low-calorie, fat-free and nutrient-rich snack. In a news release on Sept. 17, 2013, Oregon State University has reported, "Red grapes, blueberries may enhance immune function."
Researchers in the Linus Pauling Institute at Oregon State University have discovered resveratrol found in red grapes and a compound called pterostilbene from blueberries boost the innate immune system in people. These compounds, which are both called stilbenoids, were found to work in synergy with vitamin D and to have a significant impact in raising the expression of the human cathelicidin antimicrobial peptide, or CAMP gene, which is associated with immune function.
These findings were made in laboratory cell cultures and therefore do not prove that similar results would occur as a result of dietary intake. However, the scientists said this research adds more interest to the potential of some foods to improve the immune response. This study has been published in the journal Molecular Nutrition and Food Research. This research is very interesting and could possibly lead to the development of therapeutically useful natural compounds which could boost the innate immune response in people.