Why do some men grow beards?

Men produce a hormone (body chemical) which enables them to grow hair on the lower part of heir faces. This will grow into a mustache and beard if -it is not shaved off. As early as the iron age men have chosen to shave, or to shape their beards and mustaches to improve the way they look. They have also shaved for comfort in a warm climate - beards can be hot and itchy! Because the razors they used were open blades, they were quite difficult and dangerous to use. Nowadays, with safety and electric razors available, more men choose to be clean shaven.