Certain risk factors are known to cause a worsening of gum disease. More commonly, these include smoking (both tobacco cigarettes and electric) and poorly controlled Diabetes (Type 1 and 2). There are also some other conditions and medications that can have an effect on your gums making cleaning more difficult. You dentist and hygienist will always help identify these risk factors and discuss their management with you.
You can read more about how Diabetes and Heart Disease are linked to Gum disease by following these links: Diabetes / Heart Disease