Scientists have determined that an effective way to lower cholesterol is to eat three servings of whole grains every day  Studies have shown that the cholesterol levels of people who did so were significantly lower after six months than were those of people who did not, even though the cholesterol levels of the two groups had been the same before the studies began
Clearly, eating whole grains can have an appreciable effect on cholesterol levels
Were the two groups of people in the study involved in the same exercise program.