University of Delaware scientists have discovered that firefly larvae use light signals to ward off predators, rather than coloration. The research suggests an aposematic display, warning predators of an unappetizing meal.
A study found that low leptin levels are associated with the absence of menstruation in underweight female students. The research suggests a critical leptin level is needed to maintain menstruation, with implications for eating disorders and other physiological and psychological conditions.
Research reveals low leptin levels in restrained eaters, particularly in underweight females, who have higher cognitive restraint scores. The study found a negative correlation between leptin levels and cognitive restraint scores in these individuals.
A study examining brain tissue from suicides and controls reveals higher serotonin receptor binding in certain areas, particularly those associated with violent deaths. The findings suggest a potential link between altered serotonin function and suicidal behavior.
Female patients with acute anorexia nervosa exhibit low plasma leptin concentrations, reflecting restricted energy intake. Leptin levels increase upon weight gain, but drop again after weight loss, suggesting a complex relationship between leptin regulation and weight fluctuations in these individuals.