Americans are shaving years off their lives and quality time from their years by making unhealthy lifestyle choices. And Utahns are no different.

To a degree, we choose when and how we will die. We decide when we sit on the couch instead of going for a walk, when we load up on sugars and greasy foods but never eat fruits and vegetables. When we light up.

Seventy percent of deaths are lifestyle-related and thus preventable. That means those deaths are also premature, according to Steven G. Aldana, professor at BYU's College of Health and Human Performance and a recognized expert on lifestyle and longevity.

"There's a gap between what we know and what we do," Aldana said in a address to the fifth annual IHC Healthy Communities Conference, Wednesday at the Salt Lake Hilton.

With the exception of smoking (23 percent nationally, 12.8 percent in Utah), Utah is very similar to the rest of the nation in many lifestyle choices, according to Aldana's data. On average, 20.6 percent of Utahns get their five servings a day of fruits and vegetables. Nationally, it's 22.6 percent. Nationally, slightly more than 1 in 5 Americans tip the scales on the heavy to obese side. In Utah, it's slightly less than 1 in 5. Meanwhile, 78 percent of Americans are inactive, while sedentary describes 74 percent of Utahns.

Fully 91 percent of diabetes cases are lifestyle-related and preventable. Four percent of Utahns have diabetes, compared to 6.7 percent nationally.

How do we die? Nearly one-third of Americans succumb to cancer. Just under half die of heart disease. And 70 percent of both those cancers and heart disease are lifestyle-related, Aldana said.

Recently, in an airport, Aldana saw posters showing that the automatic external defibrillators are everywhere, with simple instructions on how to use them. It would be more helpful, he said, to line the walls with fruits and vegetables to prevent the heart attacks in the first place.

Research puts a number value on human decisions. People who eat red meat more than once a week subtract 3.9 years from their lives, for instance, he said. A vegetarian lifestyle adds 1.5 years. Exercising regularly adds 2.5. One of the best things you can do is eat a fourth-cup of nuts five times a week, adding 2.5 years because of healthy fats and fiber. Some studies say obesity reduces life span by as much as 11-13 years.

And research shows that "you'll die sooner if you're inactive than if you're a smoker."