The opposite can be true; i.e., people with large muscle mass sometimes have elevated CK levels in the absence of any pathology. This particular enzyme falls into a category where an individual's own normal is more relevant than the normal range given for a population.
1 If the demand increases, and the supply remains the same, there will be a shortage. 2  This will mean the price will increase. 3  If the demand decreases, and the supply remains the same, there will be a surplus. 4  This will mean the price will go down.
A demand curve can shift to the left for a wide variety of reasons. A negative product review can reduce consumer demand for an item, shifting the demand curve to the left. Similarly, a government health warning about an item also can reduce demand and shift the curve.