Lets face it, the press generally does a poor job of reporting the risk or benefits of some latest research topic often not even mentioning the sample size or the basic numbers. Consequently I was hoping this book had some hard data on various topic but instead what is presented semi-quantitative risk meters covering likelihood and consequences. This seems to reflect the difficulty and incompleteness of risk data. An idea data set would cover all ages from birth to death. One would expect the curve of some risk factor such death from smoking (to take the most extreme case) to peak around age 60 while not showing much difference from normal death rates near age 20 nor around age 90 when everyone is dieing off. I think one can see just how much reported risk data might be meaningless as it is so dependent on the age range of the study. Still this book is better than nothing.