I’m Hip, Man…

Researchers have found that the width of the pelvis, the distance between the hip bones and the diameter of the hip bones all increased as people got older, even after people maxed out height-wise.

“I think it’s a fairly common human experience that people find themselves to be wider at the age of 40 or 60 then they were at 20,” study researcher Dr. Laurence E. Dahners, a professor in the orthopedics department at the University of North Carolina School of Medicine, said in a statement.

For years, people thought the widening was because of an increase in body fat, but the new findings show that pelvic growth may lead to an increase in waist size as people get older — and not just because they put on more weight, Dahners said.

The pelvic width of the oldest people in the study (ages 70 to 79) was, on average, about an inch larger than the youngest people (ages 20 to 29), according to the study. That translates to about a three-inch increase in waist size between someone age 20 and someone age 79.

 The new study was published May 25 in the Journal of Orthopaedic Research.

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