The United States spent about $2.2 trillion on healthcare in 2007. This accounts for 16 percent of our gross domestic product, and that's projected to rise to 20 percent by 2017. Much of this healthcare spending can be tied to preventable health problems. Here are some examples of preventable health problems: The largest numbers of deaths in the United States are caused by two preventable causes - tobacco smoking and high blood pressure - killing an estimated 467,000 and 395,000 people respectively in 2005.
Nutrition is coming to the fore as a major modifiable determinant of chronic disease, with scientific evidence increasingly supporting the view that alterations in diet have strong effects, both positive and negative, on health throughout life (World Health Org 2003). Dietary adjustments may not only influence present health, but may determine whether or not an individual will develop such diseases as cancer, cardiovascular disease and diabetes much later in life.