A primary benefit of natural enzymes is eliminating and preventing scar tissue and fibrosis. Fibrosis itself is scar tissue. As we age, fibrosis becomes a leading cause of eventual death. Around our late 20's our bodies being to produce a diminishing output of enzymes and by the time we reach our 40's we produce very little enzymes. Cystic Fibrosis patients have virtually no enzyme production to speak of, and even cystic fibrosis children seldom make it past their 20's before they die of the restriction and shrinkage in the lungs from the formation of fibrosis or scar tissue.

As a result of diminishing enzyme production, our bodies are less and less able to reduce the over abundance of fibrin it deposits in nearly everything from simple cuts, to the inside of our internal organs and blood vessels. This inability is particularly noticeable in women, who frequently develop conditions such as fibrocystic breast disease, uterine fibroids, adhesions, and endometriosis. Men and women alike grow arterial sclerotic plaque (which is scar tissue). We are all also prone to have fibrin begin to spider its way into our internal organs, reducing the organs size and function over time. As we age, our wounds heal with thicker, less pliable, weaker and more visible scars.

By replacing lost enzymes we can help control and reduce scar tissue and fibrosis, thus preventing many of the problems associated with lack of enzymes and excess fibrin. Adding vital enzymes can also help reverse and control existing conditions caused by fibrosis. Even old scar tissue can be dissolved and "eaten away" from surgical wounds, pulmonary fibrosis, kidney fibrosis and even keloids years after their formation. Though doctors in the United States are only recently becoming aware of the benefits of added enzymes, doctors in Europe and Asia have been administering enzymes for decades.

Among the best enzymes for removal of scar tissue are serrapeptase and nattokinase. Chymotypsin and pancreatin are considered to be especially valuable against cancer tumors, especially pancreatic cancer tumors.

An especially powerful enzyme is serrapeptase, which is a proteolytic enzyme derived from a species of bacteria originally found in the intestines of silkworms. The bacteria Serratia mercesans E1 produces Serrapeptase, an enzyme that enables the silkworm to dissolve its silken cocoon and emerge after metamorphosis. Serratia is produced by fermented cultures. Studies have shown that serrapeptase reduces scar tissue, improves tissue healing and significantly reduces inflammation.

Serrapeptase also has the unique ability to digest non-living tissue that is a by-product of the healing response without harming living tissue. Serrapeptase is used to dissolve non-living tissues to include: scar tissue, fibrosis, blood clots, cysts and arterial plaque. It is also used as an anti-inflammatory agent against Sinusitis and for thinning mucous secretion and as an agent against varicose veins and fibrocystic breasts. It is believed that serrapeptase can play a key role in dissolving the outer protective layers of cancer cells and tumors to enable the immune system and other cancer fighters to better attack the cancer.

Serrapeptase may be particularly effective for those who have lung problems, as it clears out all of the inflammation, mucus and dead/scar tissue. Clearing away problem tissues enables the body's own natural healing system to be able to better replace the bad tissue with healthy tissue and result in better lung function. Serrapeptase also helps eliminate old scar tissue by slowly digesting all of the dead tissue/scar tissue so that it can be replaced as needed with healthy tissue

Serrapeptase is particularly sensitive to a low pH, thus the supplement versions which are enterically coated are considered superior.

Sources included:

http://www.articlesnatch.com/Article/Systemic-Enzymes--Scar-Tissue--Uterine-Fibroids--Inflammation--Toxins-Of-The-Blood/458516
http://www.thewomenwarriors.net/phpbb2/viewtopic.php?t=414
www.dr-gonzalez.com/clinical_pearls.htm