Related Clues:

• Story about rising vitality, given enzyme
• Enzyme in fat breakdown
• Enzyme that breaks up fats
• Go wrong producing enzyme
• Writer conceals pressures? That's bound to cause gut reaction and breakdown!
• Writer conceals pressures that's bound to cause gut reaction and breakdown
• Enzyme bringing control, limiting secretion ultimately
• Fat-breakdown enzyme
• Kidney enzyme that regulates blood pressure
• The main gastric enzyme in the human digestive system
• What's in saliva to break up meal, say