There’s a reason why many collagen supplements are derived from chicken.

There’s a reason why many collagen supplements are derived from chicken.

Everyone’s favorite white meat contains ample amounts of the stuff. (If you’ve ever cut up a whole chicken, you’ve probably noticed how much connective tissue poultry contains.) These tissues make chicken a rich source of dietary collagen.

Several studies have used chicken neck and cartilageTrusted Source as a source of collagen for arthritis treatment.

3. Fish and shellfish
Like other animals, fish and shellfish have bones and ligaments made of collagen. Some people have claimed marine collagen is one of the most easily absorbed.

But while your lunchtime tuna sandwich or dinnertime salmon can certainly add to your collagen intake, be aware that the “meat” of fish contains less collagen than other, less desirable parts.

“We don’t tend to consume the parts of fish that are highest in collagen, like the head, scales, or eyeballs,” Gabriel says. In fact, researchersTrusted Source have used fish skin as a source for collagen peptides.

4. Egg whites
Although eggs don’t contain connective tissues like many other animal products, egg whites do have large amounts of prolineTrusted Source, one of the amino acids necessary for collagen production.

5. Citrus fruits
Vitamin C plays a major role in the production of pro-collagenTrusted Source, 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

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