Enzymes are highly specific and incredibly efficient biological catalysts. For a matter a fact the human body would not exist without enzymes because the chemical reactions required to maintain the body would not occur fast enough. The key to this is the catalytic power of enzymes which drives reactions.Click to see full answer. Also question is, what stops enzymes from working?Enzyme activity can be affected by a variety of factors, such as temperature, pH, and concentration. However, extreme high temperatures can cause an enzyme to lose its shape (denature) and stop working. pH: Each enzyme has an optimum pH range. Changing the pH outside of this range will slow enzyme activity.Beside above, what are the symptoms of enzyme deficiency? Additional symptoms of EPI might also include: weight loss. tiredness. gas. cramps. bloating. pain in the center of the stomach that radiates to the back. loss of muscle. signs of vitamin deficiency, such as brittle nails, hair loss, and skin problems. In this manner, can life exist without enzymes? Enzymes allow reactions to occur at the rate necessary for life. Without digestive enzymes, animals would not be able to break down food molecules quickly enough to provide the energy and nutrients they need to survive.How long does it take digestive enzymes to work?The great thing about digestive enzymes is all they need to start working is food. They’ll start to break down food molecules as soon as they come into contact with them. You should start to notice benefits within a few days! And remember: Your enzymes are only as good as what you feed them.