You can help your body make more collagen by eating healthy foods. To make it, your body puts together amino acids called glycine and proline. You find these acids in high-protein foods such as chicken, fish, beef, eggs, dairy, and beans. Other nutrients, like vitamin C, zinc, and copper, also play a part. You can get vitamin C in citrus fruits, tomatoes, and leafy greens. For zinc and copper, try shellfish, nuts, whole grains, and beans.