Jia and the study’s first author Justin Minnerly, Ph.D., who graduated from FAU in 2017, suspect that both the calorie of food or perhaps the combination of the food together with the smell of the food influences the aging process through diet restriction. Olfaction is simply how a neuron detects the smell of a food.
“When people are on a diet they might say something like ‘I didn’t eat a lot of food,'” said Jia. “Except it’s not only the calories that count, but also the smell of food that can influence the function of the brain and the GI tract.”
Prior research on fruit flies confirms this notion. When they were on restricted diets, the fruit flies lived longer. But when they were allowed to smell the food while on this restricted diet their life expectancy was not as dramatic as it was without smelling the food.
Read more at Florida Atlantic University