Some people have serious problems with clutter. They have what experts call hoarding disorder. Hoarders continually gather objects until there is no space or room for everything. American experts estimate that hoarding disorder affects between two and five percent of the population.

　　Hoarding has been linked to Obsessive-Compulsive Disorder, also known as OCD. People who suffer from OCD have ideas that interfere with their daily activities. But they recognize they have a problem. Some hoarders do not realize they have a mental health disorder. Hoarding can also result from other disorders.

　　In , the American Psychological Association included hoarding in its Diagnostic and Statistical Manual of Mental Disorders. Medical health experts often turn to the manual for guidance.

　　People with hoarding disorder continue to gather and save things. Most people say the objects hoarders keep are useless or worthless. However, hoarders believe the objects could be useful someday. They may even develop an emotional connection to such things or feel safer when surrounded by their growing possessions.

　　Hoarders are afraid to throw away things. At the same time, they continue to bring more and more things into their homes. They may save objects such as newspapers, clothing, and even old food.

　　Hoarders live with so much clutter that it may affect their physical health. Dirt, insects and bacteria that form over time can cause sickness.

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