The lifespan of a mattress depends on the quality of the mattress, the materials it's made of, and how often it is used. If you are suffering from disc problems, we suggest that you replace your mattress every 7 – 10 years.The lifespan of a mattress depends on the quality of the mattress, the materials it's made of, and how often it is used. If you are suffering from disc problems, we suggest that you replace your mattress every 7 – 10 years.