Final answer:
Avoiding SUx in myotonic dystrophy prevents interference with toxic RNA and its harmful effects in the body.
Step-by-step explanation:
Myotonic dystrophy is a genetic disorder that affects the muscles and other systems in the body. One of the main problems in myotonic dystrophy is the buildup of toxic RNA in the cells, which leads to muscle weakness and other symptoms. SUx refers to small molecules that target and inhibit the toxic RNA in myotonic dystrophy. By avoiding the use of SUx, you can prevent interference with the toxic RNA and its harmful effects, allowing the body to better manage the condition.