John has noticed that many people in his generation tend to be overweight, while pictures of people from older generations show healthy weights when they were his age. what is the most likely reason he is more susceptible to illness? older generations had more accurate health information, and people were more active. people lead more sedentary lives and have a different dependency on vehicles today. today's generation leads more active lifestyles and uses current health information. people eat an excess of healthy foods today and combine it with employment requiring physical labor.