There is another cause, other than radiation exposure, that prevent proper enzyme production, Ricin poisoning. Ricin prevents protein productions by targeting and inactivating ribosomes, the cell's protein-making machinery.
Multiple System Atrophy 40 460 620 1000 2750 (sq 1587 6500 3249-4 2193-4 4258-7) Hz
Lysosomal Enzyme Disorders 80 410 950 2750 5500 (sq 1565 6750 1929-3 2364-2 5857) Hz
and other more enzymes and protein specific conditions.