Elderberry

Elderberries contain chemical compounds called anthocyanins, which have immune-boosting properties. Therefore, eating elderberries is a safe and effective treatment for reducing cold symptoms. Elderberries contain flavonoids and other polyphenols, which act as antioxidants, helping to inhibit, delay or reverse cancer formation. So they have the ability to effectively fight cancer.

Similar fruits as Aronia berries, cranberries, goji berries, acai berries, and tart cherries are all high in catechins and anthocyanins, which may help increase your immune response to infections.