The United States is getting more and more obese.  Why is this happening?
Don't know why.  Obesity in the United States has been increasingly cited as a major health issue in recent decades, resulting in diseases such as coronary heart disease 
How does how fat you are, affect the function of your heart, and cause heart diseases.
coronary heart disease that lead to mortality.
It's sad that people will allow themselves to get to that point.  What can we do as a country to stop that from happening?
Obesity in the United States
Obesity in the United States is a major health issue, resulting in numerous diseases, specifically increased risk of certain types of cancer, coronary artery disease, type 2 diabetes, stroke, as well as significant increase in early mortality and economic costs. While many industrialized countries have experienced similar increases, obesity rates in the United States are the highest in the world.
An obese person in the United States incurs an average of $1,429 more in medical expenses annually. Approximately $147 billion is
trend between trans fatty acid intake and LDL cholesterol concentration, and therefore increased risk of coronary heart disease, by raising levels of LDL cholesterol and lowering levels of HDL cholesterol.
Several large studies have indicated a link between consumption of high amounts of trans fat and coronary heart disease, and possibly some other diseases, prompting a number of government health agencies across the world to recommend that the intake of trans fats be minimized.
In the United States, partial hydrogenation has been common as a result of preference for domestically produced