To conduct the research, Cameron and OHSU post-doctoral adolescent Elinor Sullivan, Ph.D., advised 18 changeable rhesus macaque monkeys at the Oregon National Primate Analysis Center. The monkeys were placed on a high-fat diet for several years. They were again alternate to a lower-fat diet (standard monkey food) with a 30 percent abridgement in calories.
For a one-month period, the monkeys' weight and action levels were carefully tracked. Action was tracked through the use of an action adviser beat on a collar. "Surprisingly, there was no cogent weight accident at the end of the month," explained Sullivan.
"However, there was a cogent change in the action levels for these monkeys. Naturally occurring levels of concrete action for the animals began to abate anon afterwards the reduced-calorie diet began. When caloric assimilation was added bargain in a additional month, concrete action in the monkeys beneath alike further."
A allegory accumulation of three monkeys was fed a accustomed monkey diet and was accomplished to exercise for one hour circadian on a treadmill. This allegory accumulation did lose weight. "This abstraction demonstrates that there is a accustomed anatomy apparatus which conserves activity in acknowledgment to a abridgement in calories.
Food is not consistently abounding for bodies and animals and the anatomy seems to accept developed a action for responding to these fluctuations," added Cameron. "These allegation will abetment medical professionals in advising their patients.