Our new analysis shows that the American middle class lost ground in the vast majority of metropolitan areas from 2000 to 2014, and the shares of adults in the lower- and upper-income ranks rose in most areas. There was more movement into the upper-income tier in about half the areas, while in the other half there was more movement downward.
http://www.consumergenetics.com/caffeine_test.php. The lethal dose of caffeine is 2 grams of caffeine per day, that is, 80-100 cups of coffee a day.For slow metabolizers of caffeine, the lethal dose of caffeine can be lower.t's dependent on weight & individual sensitivity & estimated to be about 150-200 milligrams/kilogram of body mass. ChaCha on! [ Source: http://www.chacha.com/question/what-is-a-lethal-dose-of-caffeine ]. More Answers to  What is a lethal dose of caffeine .
Think again. One Journal of Analytical Toxicology report looked at nine different types of decaffeinated coffee and determined that all but one contained caffeine. The dose ranged from 8.6 mg to 13.9 mg. (A generic brewed cup of regular coffee typically contains between 95 and 200 mg, as a point of comparison.