Vitamin C plays a major role in the production of pro-collagen, the body’s precursor to collagen. Therefore, getting enough vitamin C is critical.
As you probably know, citrus fruits like oranges, grapefruit, lemons, and limes are full of this nutrient. Try a broiled grapefruit for breakfast, or add orange segments to a salad.
Though citrus tends to get all the glory for its vitamin C content, berries are another excellent source. Ounce for ounce, strawberries actually provide more vitamin C than oranges. Raspberries, blueberries, and blackberries offer a hefty dose, too.
“Furthermore,” Davidson says, “berries are high in antioxidants, which protect the skin from damage.”