Americans are living longer and healthier than ever before, according to a 2013 Harvard University study, which found people are reporting fewer disease symptoms and are even having less trouble with everyday activities like walking and standing. This clean bill of health seems to have extended to every ethnic group and exists in both males and females. Advances in medical innovations and treatments, better public education programs, as well as declining rates of tobacco use are believed to all be major contributors to this trend.

The battle is not over yet, however, and unfortunately, this decrease in poor health does not extend to all medical conditions. In recent years, certain medical conditions, many of which have been unseen for many years, have been on the rise. The reasons for increases in certain medical conditions range from poor diets and exercise, to lifestyle choices and even increased longevity.

Using data released by the Centers for Disease Control and Prevention and the World Health Organization, Healthgrove, a health news and information site with an emphasis on data-driven analysis, was able to identify 14 diseases that have been on the rise in the U.S. in the past decade. While some may be expected, such as obesity and autism, others, such as dengue fever and the bubonic plague, may surprise you.

Click "view slideshow" to find out.

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Be on the look-out for these on-the-rise diseases. Claus Rebler CC BY-SA 2.0