7 anti-aging foods

[Photo by Yao Yongliang/Asianewsphoto]

Key words: increase immunity

Oranges contain the most vitamin C, 30 percent more than other kinds of fruit. The simplest and most effective way to prevent winter colds is to eat oranges.

1 or 2 oranges a day will satisfy the body's demand for vitamin C.

Garlic helps kill contaminants

Vitamins may not prevent diseases