My eating habits, my activity, and my mental attitude.

I think that lifestyle is the primary factor of how healthy I am, but we cannot discount genetics and the environment. We can be the driver of our health in any situation.

I agree that genetics is second most important.

I believe wisdom is the first practice to recognize what is needed for each individual, according to diet, type of exercise. Wisdom is the biggest factor, if I had used the wisdom given to me, I would not have stayed in a job that was caused medical problems-- allergies and asthma. Choose your decisions wisely.

A lot IS genetics. Nobody in my family has had cancer, or had a heart attack or stroke until they were over 70. Yet I get penalized because of my age.

I wish multiple answers were acceptable on this question. Genetics play a huge role in our health; they set our starting point. However, when we have access to healthy food, exercise, and health care, we can tailor our lifestyle choices to improve our health from that starting point. Access to all those things is vital; we can't choose what's not available to us.