Eat Purple

Anthocyanins are pigments in plants that give a red, blue or purple colour.

• They prevent blood-vessel damage and have been shown to repair leaking, damaged capillaries.
• They increase blood sugar metabolism and may be a useful anti-inflammatory.
• They appear to help night vision and improve overall visual acuity.

Plants rich in anthocyanins are:

• Blueberry, cranberry and bilberry; black and red raspberries and blackberry; blackcurrant, dark cherries.
• Aubergine (eggplant) peel; black rice.
• Concord grape, muscardine grape.
• Red cabbage; red onions. 
• Red-fleshed peaches and apples also contain anthocyanins.

Anthocyanins are less abundant in banana, asparagus, pea, fennel, pear and potato.

Various sources