A Purina study showed that feeding a dog to ideal
body condition can actually help him live
The study that helped the Purina research
team turn heads is called the Purina Life-Span study. Back in 1984,
Purina researchers began looking into how managing calories and
body composition could play a role in promoting health and
improving the quality of life.
Researchers investigated 24 litter pairs. One litter-mate was
allowed to eat an unlimited amount of food during 15-minute daily
feedings. Seventy-five percent of that amount was offered to the
dog's paired sibling. All dogs ate the same 100% nutritionally
complete and balanced diets throughout the study.
As the dogs lived out their lives, the results were significant:
the lean-fed dogs' healthy years were extended by 1.8 years. "It
truly was a breakthrough study," said Mark Roos, Director
of Global Nutrition and Technical Communications.
Purina was the only one to have gone to this length, although a
similar study is being conducted on primates. At the moment, that
study is ongoing, so no results are available.