Many Americans are hesitant to talk about chronic illness with family and friends because they consider it taboo, says a new survey.  The results showed that while 82 percent of respondents said they know someone who has a chronic illness, only 34 percent said they were likely to talk to the person about ways to better manage their disease. The study found that respondents were more likely to talk to their friend or family member about whether or not they should buy a house, to loan them a large sum of money, to advise them against a job or tell them that their spouse was unfaithful than talk to them about their illness.