For a while, we were hearing about the dangers of swine flu. Now it seems that it is more of an ordinary flu that is aggravated by other health considerations. This New York Times article (http://www.nytimes.com/2009/05/09/health/09flu.html) about the epidemic shows that many factors contribute to our overall health—age, other existing conditions, diet, exercise. With all the factors that affect our health, it can be difficult to get a good idea of the dangers of a disease or the efficacy of a treatment. This is similar to what we read about in the Taubes HRT article and in Good Calories, Bad Calories.