While attending the UC Davis College of Biological Sciences, alum Arik Davidyan investigated testosterone’s role in muscle mass gain, maintenance and decay, using mice as experimental models.

In a study appearing in Endocrinology, Associate Professor Karen Ryan and her colleagues identified the hormone fibroblast growth factor-21 (FGF21) as a control for regulating dietary protein intake in male mice. They found that male mice injected with the hormone increased their intake of dietary protein over carbohydrates and fats.

NASA has invested millions of dollars in UC Davis research, working with UC Davis biologists, engineers, physiologists, psychologists and other researchers to study life in space — whether that be studying space itself, the effects of gravity, getting there, staying there or surviving there.