Which of the following is NOT considered a modifiable risk factor for improving health?

Age is classified as a non-modifiable risk factor because it is a characteristic that cannot be changed or influenced by behavior or lifestyle choices. As individuals grow older, their age naturally increases, and this factor is associated with certain health risks, such as increased susceptibility to chronic diseases.

In contrast, the other options—unhealthy diet, physical inactivity, and tobacco use—are all modifiable risk factors. These can be changed through personal choices and behaviors. For instance, individuals can enhance their diet by consuming more fruits and vegetables, increasing their level of physical activity through exercise, and quitting tobacco use to reduce health risks. Focusing on modifying these lifestyle factors can lead to significant improvements in overall health and well-being.