31.   Doctors already know that patients respond very differently to drug treatments.

32.   Doctors have known for decades that heart disease is caused by high cholesterol, cigarette smoking, obesity, and lack of exercise.

33.   Doctors have long known how the disease is transmitted and cured in humans.

34.   Doctors have long known that outbreaks of tuberculosis often occur under crowded living conditions.

35.   Doctors know better.

36.   Doctors know testosterone fuels prostate cancer growth, and currently prescribe the drugs Leupron or Zoladex to inhibit its production.

37.   Doctors know that hand-washing is the most effective thing one can do to prevent contagion.

38.   Doctors know when a PDA patient needs treatment because they hear a continuous heart murmur.

39.   Doctors have known for a long time that breast cancer runs in families, but not every family member will develop cancer.

40.   Doctors have known for years that HRT protects postmenopausal women from heart disease.