Cancer cells are able to spread due to a weak Extracellular Matrix (ECM); cancer cells need to first break through the ECM before they can metastasize. Collagen protein can be held responsible and as a factor to hold the Extracellular Matrix together.
Therefore, strengthening the Extracellular Matrix (ECM) by boosting collagen levels may be a reasonable way of keeping cancer cells from metastasizing. Eating foods rich in vitamin C and amino acids can increase the levels of hyaluronic acid and collagen in the body as both are important for the skin.
Research scientists are totally in love with this magical powder (Fish Collagen Peptide), which evolves every day to come up with a novel application.