21.   The advocates say that for AIDS patients in particular, marijuana stimulates hunger and suppresses nausea, allowing them to gain the strength needed to prevent other illnesses.

22.   The clearest step health plans have taken toward preventing expensive illness is in disease management.

23.   The goal is to maintain health and prevent illness.

24.   The new recommendations, called Dietary Reference Intakes, represent a shift in beliefs about the importance of a healthy diet in preventing illness.

25.   The report also provided a look at how many patients at a plan are receiving treatments important to preventing illness.

26.   This helps prevent many illnesses, especially those affecting the gastrointestinal tract.

27.   To date, efforts to prevent the illness in cows have centered on eliminating animal feed that contains infected animal parts.

28.   Two weeks ago, the U.S. Food and Drug Administration approved irradiating raw beef, pork and lamb to prevent foodborne illnesses.

29.   U.S. drugmakers will report higher second-quarter earnings, fueled by new pharmaceuticals and the increased use of medicines to treat and prevent illnesses.

30.   Unlike vaccines that prevent illness, cancer vaccines are designed to fight illnesses that already exist and prevent cancers from spreading, thereby prolonging life.