Red, blue, purple, or black — no matter what the color or size, berries are wonder foods that are loaded with phytochemicals, antioxidants, and other vitamins and minerals that help prevent cancer and many other diseases. Cranberries and blueberries also contain a substance that may prevent bladder infections.

• Cranberries. High in vitamin C, B complex, A, and folic acid, cranberries help prevent bladder infections by keeping bacteria from clinging to the wall of the bladder. Cranberries also help reduce asthma, diarrhea, fever, fluid retention, disorders of the kidney, urinary tract and lungs, and skin disorders, and facilitate weight loss. Yield per pound: four to six ounces of juice.

• Blueberries and blackberries. Both berries are packed with sapronins, which improve heart health, as well as disease-fighting antioxidants, vitamin C, minerals, and phytochemicals. Yield per pound: three ounces of juice.

Eating a diet rich in blackberries, blueberries, raspberries, cranberries, and strawberries may help to reduce your risk of several types of cancer. The blue color in blueberries comes from anthocyanins, phytochemicals that help protect your body from cancer. Blueberries and raspberries also contain lutein, which is important for healthy vision.

• Raspberries. Raspberries are packed with vitamin C, potassium, and are 64 calories per cup. Yield per pound: four to five ounces of juice.

• Strawberries. Strawberries are packed with vitamin C, iron, calcium, magnesium, folate, and potassium — essential for immune system function and for strong connective tissue. Strawberries also provide just 53 calories a cup. Yield per pound: four to five ounces of juice.