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Bone broth is made by slowly simmering animal bones (beef, pork, or chicken) in water for long periods.
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Gelatin is a slightly degraded or broken down form of collagen. It still contains the same three amino acids needed to synthesize collagen.
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If you’re looking for a collagen boost, choose cuts with the bones and skin—that’s where the collagen is.
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Another natural source of collagen protein is organ meats. These include the liver, tongue, heart, kidneys, and brains from beef, pork, or chicken.
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A half-cup of bell peppers contains more than the recommended daily amount of vitamin C, which is needed for collagen production.
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Leafy greens like spinach, kale, and swiss chard are excellent sources of vitamin C.
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No matter what berries you pick—blueberry, blackberry, raspberry, or strawberry—they’re all great sources of vitamin C.
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Egg whites in particular contain the amino acids proline and glycine, two necessary building blocks for collagen.
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Beans are a great source of plant-based protein that often contain the amino acids needed to make collagen. One cup of cooked beans usually contains 15–16 g of protein.
Fish is another source of collagen, particularly the skin. Sardines are especially notable.