No cure exists yet for osteogenesis imperfecta, but treatments like bisphosphonates, surgery, and emerging gene therapies are helping people manage it better.
Dimorphism explains why the same species can look dramatically different. Learn how genetics, hormones, and environment drive these variations in animals, humans, and fungi.
hCG can boost male fertility by stimulating testosterone and sperm production, but it works better for some men than others. Here's what the research shows.