You can lead a horse to water but you can't make it drink, in 2004 the US Government spent 400 million dollars on obesity research. Americans are bombarded with information from government and news outlets, they just don't want to follow the advice.
http://www.obesityinamerica.org/PDF/govinitiatives.pdf
In 2004, two major U.S. government agencies – the Department of
Health and Human Services (HHS) and the Food and Drug
Administration (FDA) – launched programs aimed at combating the
epidemic of obesity in the U.S.
HHS joined with the Ad Council to educate Americans about taking
small, achievable steps to improve their health and reverse the impact
of obesity81. FDA’s campaign to reduce obesity called, “Calories
Count,” includes recommendations to strengthen food labeling, a
consumer education component about maintaining a healthy diet and
weight, and a push to restaurants urging them to provide information
about nutritional value and caloric intake for all food served82.