Very Old Don't Always Have Healthy Habits
Longevity Genes May Protect Them From Unhealthy Lifestyles, Expert Says
Aug. 3, 2011 -- Forget the stereotype pairing up longevity with clean living.
Men and women who live to age 95 and beyond, it seems, are overall no better than the general population when it comes to health habits such as watching their weight, eating well, and exercising, according to a new study.
"They are just as bad as the rest of us," says researcher Nir Barzilai, MD, director of the Institute for Aging Research at Albert Einstein College of Medicine of Yeshiva University, New York.
Apparently, you can eat fried foods and ice cream, drink, smoke, and skip the gym and still plan your 100th birthday party. But probably only if you have the right genes, he says.
If you have longevity programmed in, Barzilai says, those genes seem to buffer you from bad habits. The bad news? "You can only know [if you have those genes] when you are there." By ''there," he means your 100th birthday or so.
The study findings are no reason to abandon healthy habits, he warns.
His study is published online in the Journal of the American Geriatrics Society.
Longevity and Health Habits: A Closer Look
For the study, Barzilai and his colleagues interviewed 477 Ashkenazi Jews, all living independently. This group is more genetically uniform than many other populations, so they are ideal to study. The age range was 95 to 109, with 97 or 98 the average.
Nearly three-fourths of the group were women.
The men and women described their habits at age 70. That is because it is more likely to represent the lifestyle they followed most of their adult life, Barzilai says.
Barzilai compared their health habits to those of 3,164 people born around the same time. The comparison group provided information to a large database, the National Health and Nutrition Examination Survey, between 1971 and 1974.
Although the longer-lived men and women were better at some health habits than the comparison group, overall they were not much better.
Among the findings:
- The very old were as likely as the others to be overweight or obese. Although 47.8% of the men with longevity were overweight or obese, 55% of the comparison group was. While 43.8% of the long-living women were overweight or obese, 41.2% of the comparison group was.
- Among women, 9.6% of the very old were obese at some point during their lifetimes, compared to 16.2% in the comparison group. Among men, 4.5% of those with longevity compared to 12.1% of the comparison group were obese at some point.
- Only 43% of long-lived men got regular exercise, but 57.2% of the comparison group did. Although 47% of long-lived women exercised, 44.1% of the comparison group did.
- Daily alcohol consumption between the groups was similar.
- About equal percents said they tried low-calorie diets. About one-fifth of the men and 27% of the women reported doing so.
Smoking (more than 100 cigarettes) was reported by nearly 30% of the long-lived women but 26.2% of the comparison women. Among men, nearly 60% of long-lived men smoked; nearly 75% of the comparison men did.