Which of the following statements about inactivity and poor diet is true?

Inactivity and poor diet are major contributors to numerous health issues in the United States, significantly impacting mortality rates. The assertion that they cause at least 300,000 deaths every year in the U.S. reflects well-documented research highlighting how lifestyle factors such as physical inactivity and poor nutrition are associated with increased risks for chronic diseases, including heart disease, diabetes, and certain cancers. These conditions are leading causes of death, and improving physical activity levels and dietary habits can reduce these risks and ultimately save lives.

The other options suggest either a negligible effect on mortality or limit the issue to a specific age group. However, extensive epidemiological studies have shown a clear link between lifestyle choices and overall mortality across all age groups, making the claim that these issues mainly affect young adults or suggest they have no significant impact on mortality rates inaccurate. Understanding the profound influence of inactivity and poor diet on public health is crucial for developing effective interventions and promoting healthier lifestyles.