A new study published in the Journal of Toxicological Sciences shows that fruit flies on methamphetamine “drastically reduce their food intake and increase their physical activity, just as humans do.” The U. of Illinois study tracked metabolic and behavioral changes in fruit flies on meth, and suggests that starvation is a primary driver of methamphetamine-related death in the little winged tweekers. Meth is, of course, not all that great for humans either. It “burdens the body with toxic metabolic byproducts and weakens the heart, muscles and bones,” and “alters energy metabolism in the brain and kills brain cells.”