|The numbers in the table below are all percentages - what percent of people are obese, smoke, engage in physical activity during leisure time, and have been diagnosed with diabetes.
There are major disparities between various ethnicities. Whites are doing the best, with only 26.4% obesity among men, 24.9% among women and just 6.9% diabetes (among both sexes). More whites smoke and get physical activity than the other ethnicities - 22.5% and 35.4% respectively.
Hispanics have 30.4% obesity among men, 33.1% among women, and 10.7% diabetes (among both sexes). 14.5% of Hispanics smoke, and 24.5% engage in physical activity.
Black men are less obese than Hispanics, but black women are more obese. Obesity rates for blacks are 28.4% among men and 41.8% among women. 10.9% of blacks are diagnosed with diabetes. 20.6% smoke and 24.6% engage in physical activity.
I don't have an easy way to compare these statistics by age because the CDC used different age ranges for each measure. However, in general, physical activity goes down as people get older and diabetes goes up.
Age: Physical Activity
Smoking and obesity are a bit less straightforward and it might be because at a certain age, people who are smoke or people who are obese are dying. I don't know. Or it could be that at a certain point, a fear of death kicks in and people get more serious about quitting smoking. That's what happened for my Grandfather. He smoked from age 12 into his late 60's until his doctor told him "If you keep smoking you WILL die." Then he stopped.